SEO

SEO Tips for Ecommerce Website Optimization

A typical Ecommerce website contains a few hundred pages. They all are dynamic and contains thousands of products for sell. Optimizing an ecommerce website like Amazon is not tough; it just requires a strong SEO strategy.
Optimizing an Ecommerce site is slightly different from optimizing a static website. You need to plan and construct your website optimization strategy well in advance. This will help save you a lot of time and effort in the future.
SEO Tips for Ecommerce website optimization to Keep Your Website Ahead in search engine Rankings and Traffic.
Uniform and clean website structure will work. The home page should clearly reflect the product range and the inner pages should follow common design architecture.
Every product page should have their relevant and unique title. An Ecommerce site can contain any number of web pages and your programmer would help you in getting dynamic title for each product.
Select an Appropriate Keyword for every webpage. For an Ecommerce site, you can ask the programmer to select keywords from the content and product name.
Create a Relevant Description Per Web Page: The description of a web page is the snippet which appears in the SERPS. Every visitor reads the snippet and then clicks on the search result. It is very important to include a description relevant to the webpage content.
Include Breadcrumbs for All Inner Pages: A breadcrumb is like a secondary navigation structure. It helps the visitor to navigate back to the main product category page. A breadcrumb also helps in the internal linking of the website. Overall, including a breadcrumb makes the website SEO friendly.
 
Use a Heading Tag: Searchbots assign a lot of importance to the heading tag. The heading tag is SEO friendly and can be used to format the title of the web page content.
Avoid Usage of Flash: Avoid using flash on every web page of your Ecommerce website. This will expand the site loading time. If the use of flash is inevitable, include textual content in the flash. Search engines are capable of reading the text in the flash file.
Optimize Images: Add the Alt tag to all the images of your website. Search engines cannot read images. The Alt tag is a means of ensuring that the search engines read the alternate text for images.
Optimize Anchor Text: Anchor text appears between the anchor opening and closing tag. It is good practice to use keywords as the anchor text.
10. Create an SEO Friendly URL Structure: The default URL structure of a dynamic website contains parameters. Search engines are not capable of understanding these parameters. A good URL structure must contain words separated by hyphens.
Limit the Number of Outbound Links: Always link to a safe and secure website. If you are not sure about the quality of the website you are linking out to, use the no follow attribute.
Submit to Search Directories: Forward your website URL to good quality search directories. Most of the search directories take a few weeks to link back to a site. Fill in the details of the submission form carefully, so that the administrator accepts the submission.
Integrate a Secure Payment Gateway: A secure payment gateway is the heart of an E commerce website. Get a trust seal from Verisign, TrustE, etc. Visitors will be more likely to trust your site and to make an online payment.
It is very easy to rank well and get quality traffic with these tips. The trick is to maintain the balance of the site being SEO and user friendly.

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Facebook

Creative Ways To Increase Your Facebook Fanbase

21 ways to get more fans for your Facebook fan page

#1: Embed Widgets on Your Website

Select from a number of the new Facebook Social Plugins and place them on your website and blog. The Fan Box widget is now the Like Box and it works well to display your current fan page stream and a selection of fans – see screenshot below with Whole Foods Market Facebook Like Box. I would recommend adding a title above the box encouraging visitors to your site/blog to click the “Like” button (which makes them a Facebook fan).
You might also consider the Live Stream widget for more advanced uses, particularly on an FBML custom tab of your fan page itself. The Live Stream widget allows Facebook users to add their comments to a live event, for example, and that activity pushes out into their stream.

#2: Invite Your Email and Ezine Subscribers

Assuming you have an opt-in email list, definitely send out an invitation to your subscribers via email (several times, over time) letting them know about your fan page and encouraging them to join. Ideally, provide them with a description of the page and an incentive to join.
Be sure to have the Facebook logo/badge appear in your HTML newsletters. Instead of the usual “Join our Fan Page,” say something creative like “Write on our Facebook wall,” or “Join our Facebook community,” or “Come add your photo to our Facebook group” (where “group” is actually your fan page). Users have to be a fan in order to interact with your fan page in this way.

#3: Add to Your Email Signature Block

Instead of promoting your Facebook personal profile (if you do), include a link to your fan page in every email you send out. If you use web-based email, check out the Wisestamp signature addon.

#4: Make a Compelling Welcome Video

Create an attractive landing tab (canvas page) with a video that explains exactly a) what your fan page is about, b) who it’s for and c) why they should become members.  The result: you’ll increase your conversion rate from visitors to fans. One ofmy favorite fan page welcome videos is by Steve Spangler, the Science Guy! After watching his video, you can’t help but want to join!
(By the way, with the new Facebook changes, if your custom welcome tab and video talk about clicking the “Become A Fan” button, you may want to change the wording to “click the Like button” now).

#5: Use Facebook Apps

I recently tested a new live video-streaming app called Vpype. The app adds a tab to your fan page called “Shows” and when you broadcast as your fan page, everyone can view by default. (You can also broadcast as your personal profile and selectively invite friends/friend lists). I wrote up a review of this app here. By announcing via Twitter, your personal Facebook profile, your blog and your email list,you can broadcast regular live Internet TV shows from your fan page and create much buzz.
Another example of app integration is Target’s “Bullseye Gives” campaign. Target had their fans vote on which of ten charities they most wanted to see the company donate to. By voting, a post goes out onto your Facebook wall and into the News Feeds of all your friends, thus providing Target with valuable exposure. (For custom apps, see companies like Buddy Media, FanAppz, Wildfire Apps, Involver,Virtue, Context Optional.) [UPDATE: Thank you to Context Optional, the creators ofTarget’s “Bullseye Gives” campaign!]

#6: Integrate the Facebook Comment Feature

My favorite example of this is the t-shirt company Threadless. On their landing tab (canvas page), you can view and purchase t-shirts as well as Like and comment on any item and choose to have that comment posted to your Facebook profile, as shown in this screenshot:
Threadless actually has their landing tab set up so visitors don’t have to become a fan to purchase/comment/interact. Yet they have organically built well over 100,000 fans.
As users comment on items, that activity is pushed out into their stream (profile wall and their friends’ News Feeds), which creates valuable viral visibility for your fan page.

#7: Get Fans to Tag Photos

If you host live events, be sure to take plenty of photos (or even hire a professional photographer), load the photos to your fan page and encourage fans to tag themselves. This, again, pushes out into their wall and friends’ News Feeds, providing valuable (free!) exposure. And, a picture says a thousand words – we notice the thumbnails in our feed more than text. 

#8: Load Videos and Embed on Your Site

Facebook’s Video feature is extremely powerful. You can load video content to your Facebook fan page, then take the source code and embed on your blog/website. There is a “Become a Fan” button right in the video itself. For an excellent tutorial, see Nick O’Neil’s post: How To Get Thousands of Facebook Fans With a Single Video.
[UPDATE: Since Facebook changed the Become a Fan button to the Like button,embedded Facebook videos now display a white watermark hotlink of the Facebook name in the upper left corner of the video player – see first screenshot below. This is a clickable link that goes to the original video page on your fan page. If the visitor to your site clicks through to Facebook from your video, and they are logged into Facebook at the time, they will see a Like button at the top left corner of the video player – see second screenshot below.]

(Screenshot shows example of an embedded Facebook video on an external site)
(Screenshot shows the same video on the original page of the fan page with the Like button)

#9: Place Facebook Ads

Even with a nominal weekly/monthly budget, you should be able to boost your fan count using Facebook’s own social ad feature. It’s the most targeted traffic your money can buy. To buy an ad, scroll to the foot of any page inside Facebook and click the link at the very bottom that says “Advertising.” From there, you can walk through the wizard and get an excellent sense of how many Facebook users are in your exacttarget market.
Then, when you advertise your fan page, Facebook users can become a fan (click the Like button) right from the ad as shown in the screenshot below. Additionally, Facebook displays several of your friends who have already liked you, thus creating social proof.
My book with Chris Treadaway, Facebook Marketing: An Hour a Day (Sybex) contains comprehensive instructions on maximizing your marketing through Facebook social ads.

#10: Run a Contest

This is somewhat of a gray area because Facebook changed theirPromotional Guidelines last year. Essentially, you need prior written permission from Facebook and need to be spending a significant amount on ads per month. However, you CAN require Facebook users to become a fan of your fan page in order to enter a contest, sweepstakes, drawing or competition. See these two postsfor further explanation. PLUS, good news: you CAN run contests and sweepstakes with the use of the apps created by Wildfire App.

#11: Link to Twitter

Link your Twitter account to your Facebook fan page and automatically post your Facebook content to Twitter. You can edit what gets posted, choosing from Status Updates, Photos, Links, Notes and Events.
You have 420 characters on the Facebook publisher and 140 on Twitter. In the tweet that goes out, Facebook truncates your post past a certain character count and inserts a bit.ly link back to your fan page. To track click-through stats on that link, just paste the bit.ly link that Facebook created for you in your browser’s address bar and add a “+” sign to the end. This works for any bit.ly link!
I also recommend you promote your Facebook fan page on your Twitter background and possibly in your Twitter bio/URL field too.

#12: Get Fans to Join Via SMS

Your fans can join your fan page via text message! You’ll need to get your first 25 fans and secure your username. Then, to join your fan page, Facebook users just send a text message to 32665 (FBOOK) with the words “fan yourusername” OR like yourusername (without the quotes).
This feature is ideal when you’re addressing a live audience, say. Have everyone pull out their mobile phones and join your fan page on the spot! This would also work well for radio or TV. (Note that this only works for Facebook users with a verified mobile device in his or her account.)

#13: Use Print Media

Look at every piece of print media you use in your business. Your Facebook fan page (as well as Twitter and any other social sites you’re active on), should be clearly displayed. Put your Facebook fan page link (and the logo) on your business cards, letterhead, brochure, print newsletter, magazine ads, products, etc.

#14: Display at Your Store/Business

If your business is run from physical premises, put a placard on the front deskletting your customers know you’re on Facebook. Ideally, you have a simple, memorable username. Incentivize customers to join right away via their mobile device and show you/your staff the confirmation for some kind of instant reward!
You might give out physical coupons promoting your fan page. For restaurants, put the Facebook logo, your username and a call to action on your menus.
I was at a hotel in San Francisco last fall and they had a placard in the elevators promoting their presence on Facebook and Twitter. The sign was very noticeable because of those ubiquitous Facebook and Twitter logos/colors!

#15. Add a Link on Your Personal Profile

If you’d like to promote your fan page to your Facebook friends, just under your photo on your personal profile there is a section to write something about yourself. I call this the “mini bio” field and strongly suggest adding a link to your fan page like so:
Be sure to format the URL with http:// otherwise it will not be clickable with just the www’s. You have a limited amount of characters, so keep it succinct and leave out the www’s. You can put in hard line breaks though to make the content easier to read.

#16: Add a Badge/Button to Your Profile

Using an app like Profile HTML or Extended Info, you can create your own custom HTML, including a Facebook badge and/or graphic embedded, as shown in the screenshot below:

#17: Use the Share Button

The Share button is all over Facebook and is a very handy feature. It only works for sharing on your personal profile. So periodically go to your fan page, scroll toward the bottom left column and click the “Share+” button. Add a compelling comment along the lines of exciting news, recent changes, special incentives, etc., happening on your fan page and invite your friends to join if they haven’t already. I find the Share button far more effective than the Suggest to Friends approach. (And, if you’d like to Share content from the web on to your fan page vs. profile, I highly recommend using theHootlet bookmarklet tool at HootSuite.com).

#18: Use the @ Tag

As long as you’re a fan of your own fan page, you can “@ tag” it on your own personal profile wall. From time to time, you can let your friends know about something happening on your fan page by writing a personal status update that includes tagging your fan page with an @ tag. Simply start typing the “@” symbol and the first few letters of your fan page name (this works whether you have your user name registered or not), and it will appear from a drop-down menu to select. This then makes it a nice, subtle hyperlink that your friends can choose to click on.

#19: Autograph Posts on Other Walls

A subtle way to gain more visibility for your fan page is to add an @ tag for your fan page when writing on your friends’ walls as a way to sign off.
I would use this one sparingly and, again, monitor the response from your friends. I have never been a fan of adding a signature block on Facebook wall posts because our name and profile picture thumbnail are always hyperlinked right back to our profile anyway. But the simple @ tag could be effective.

#20: Autograph Other Fan Pages

As with adding your fan page @ tag to posts you make on your friends’ walls, you could equally use the same technique when posting on other fan pages. This needs to be used with discretion and I would advise against doing this on any potentially competing fan page!

#21: Maybe Use “Suggest To Friends”

I won’t rule this one out completely as it does depend on how many friends you have, your relationship with your friends, how often you suggest fan pages/friends to your friends, etc (see ‘The Big Myth’ above). But I do recommend monitoring the response to this technique – perhaps simply by asking for feedback in your status update.
So, these are just 21 ways to create strategic visibility and promote your Facebook fan page.

Source: http://www.socialmediaexaminer.com/21-creative-ways-to-increase-your-facebook-fanbase/

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Digital-Marketing-Information, SEO

Get Quick Rankings in Search Engines for Your Website

  1. Get your site contents written by a professional content writer, who also has vast experience on SEO Article Writing.
  2. Avoid Duplicate Contents or Duplicate URLs.
  3. The URLs of your page should look nice to the search engines. For example, www.primusinfotech.com/Digital-Marketing-Services-India.html is called a nice URL and www.primusinfotech.com/?p=128 is called an ugly URL.
  4. All of your site pages and your site frontpage should have a valid meta description and few meta keywords also.
  5. Meta Description should be as short as possible, but should contain your main target keywords and should be in the form of a sentence.
  6. Avoid punctuation marks in meta description.
  7. Avoid placing long keywords in Meta keywords.  For example, JOOMLA SERVICES is perfect, but PROFESSIONAL JOOMLA SERVICES is not a good keyword. Search engines hate long keywords.
  8. Page title of your webpage is another important factor . Always keep it short and avoid using signs and marks inside it. Just keep it to the point.
  9. You should have a valid sitemap , which should be readable by the search engine crawlers, because, that’s from where, the search engines pick your website pages.
  10. Robots.txt is also essential. Disallow all site folders or unnecessary page links from it, so you don’t get indexed on the search engines, with that filthy stuff.
  11. Submit your website to Google from here, www.google.com/addurl
  12. Submit and verify your website at Google Webmaster Tools.
  13. Submit your site sitemap at Google Webmaster Tools and keep checking it after every 24 hours to see, if Google has accepted the Sitemap and the links of your website.
  14. If you are from US, then also submit your website to Bing and Yahoo and verify it with your website.
  15. Use Twitter, Facebook, Digg, StumbleUpon, Delicious, etc to get your website noticed by the world.
  16. Have an official Facebook Page and an official Twitter page also. Share your website and your stuff over there to drive more traffic. Remember, more traffic means, more conversions.
  17. Validate your site XHTML and CSS with the w3c validator.
  18. Test your website with ySlow and Google Page Speed and try to apply all the suggestions given by them. Try to have as low as possible grade at ySlow and have as much as possible Page Speed score.
  19. Keep the site fresh with regular new contents, so search engines consider it as a living website and not as a dead heaven.

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blog

Slot Bonuses 2020

Slot Bonuses 2020

HoF slots can be played in your desktop or notebook by way of Windows or Mac, or you can play on the go, with our app available by way of iOS , Android , and Amazon Digital. Play your favourite free online slots at any time, from wherever.

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Although the variety of symbols finally elevated to about 22, permitting 10,648 mixtures, this still limited jackpot sizes in addition to the number of possible outcomes. A hand pay refers to a payout made by an attendant or at an change point (“cage”), rather than by the slot machine itself. A hand pay happens when the quantity of the payout exceeds the utmost amount that was preset by the slot machine’s operator.

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In 2020, only a handful of states supply regulated casino betting and slots. However, extra states are introducing their very own laws and gaming legal guidelines.

On mechanical slot machines, this is normally a seven-section display, but video slot machines usually use stylized text that suits the game’s theme and consumer interface. A row of “Wheel of Fortune” slot machines in a on line casino in Las Vegas. This specific slot machine is themed to the TV sport present Wheel of Fortune. The first American video slot machine to supply a “second display screen” bonus round was Reel ’Em In, developed by WMS Industries in 1996.

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In sure jurisdictions, such as New Jersey, the EPROM has a tamper-evident seal and might only be modified within the presence of Gaming Control Board officials. Other jurisdictions, including Nevada, randomly audit slot machines to make sure that they comprise only approved software. A slot machine’s theoretical payout share is about at the manufacturing unit when the software is written. Tilt is a time period derived from electromechanical slot machines’ “tilt switches”, which might make or break a circuit after they have been tilted or in any other case tampered with that triggered an alarm.

Once you’ve placed your bet, spin the reels and if enough matching symbols land in the proper place, you’ll get paid. You could even trigger a bonus feature that can provide you extra possibilities of profitable. While these slots are very eye-catching thanks to their graphics, they also come with enough special options to make them worth playing.

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SEO

Top 10 Worst SEO Tactics

Top10 worst search engine optimization tactics



#1: Doorway Pages (aka Gateway Pages, Leader Pages, etc.)
Definition: Create multiple web pages that are devoid of useful content but heavily optimized for search engine rankings. Each page is optimized for a variation of a keyword phrase or for completely different keyword targets. The essence of this concept was to fool the search engines into thinking that these pages were highly relevant and provide top rankings for them under their targeted phrase. When a surfer stumbled on the page they were often shown a “Click Here to Visit Joe’s Pizza” link that the surfer had to click on to actually arrive at the legitimate website.


Once among the most popular methods of attaining multiple search engine placements, doorway pages were widely used until 2000 by many webmasters. Since then, Doorway pages have become the most obvious form of Spam that a search engine can find and the repercussions are dire if such a tactic is employed. Unfortunately, I have seen many sites still employing this tactic and occasionally we even get calls from potential customers wondering why they have dropped off the search engines for using this technique. We also continue to receive requests to perform this tactic on a daily basis.


#2: Invisible Text
Definition: Invisible text is implemented in a variety of ways in an effort to increase the frequency of keywords in the body text of a web page. Some of the implementation methods are: making text the same color as the background of the web page, hiding text behind layers, placing text at the very bottom of over-sized pages, etc.


This tactic is perilously old and obvious to search engine spiders. It constantly amazes me when a web site utilizes these methods for placement. Invariably, placements are the last thing that a webmaster will get when using this tactic. Invisible text had its heyday from 1995 to 1999. This not to say that invisible text didn’t work after 1999 but the majority of web sites were not using it by this time as the search engines began implementing automated methods of detection and penalization.

#3: Content Misrepresentation
Definition: Misleading search engines into believing your webpage is about topic ‘A’ when it is in fact about ‘B’. This tactic was used primarily for the promotion of adult, gambling, and other extremely competitive search markets.Unfortunately this tactic is still in use; you likely find one or two every time you search! The fact is that this tactic is the simplest for a search engine to identify and the result will be swift and complete; banishment from the search engine index indefinitely. The worst offense in the realm of the search engines is to try to fool them.


#4: Redirects
Definition: Redirects have some innocent uses (practical, legal, etc.) but they are also used nefariously to mislead search engines by making them believe that the page they have indexed is about ‘A’. When a surfer visits the page, however, they are redirected to an entirely different site about ‘B’. 


In most cases search engines have advanced enough to see this technique a mile away. In fact they usually ignore any page with a redirect (assuming correctly that the content is useless) while spidering the redirect destination. Redirects, unless blatantly Spam-related do not directly result in intentional ranking penalties, however, they have no positive effect either.


#5: Heading Tag Duplication
Definition: Heading Tags, by definition, were created to highlight page headings in order of importance. Thus the Heading Tags that are available: H1, H2, H3, etc. This duplication technique involves implementing more than one H1 tag into a webpage in order to enhance a particular keyword or phrase.This tactic is still very prevalent and likely still works on some search engines; however, none of the major search engines will respond well to this technique as it has been identified as a common manipulation.

#6: Alt Tag Stuffing
Definition: Alt Tag stuffing is the act of adding unnecessary or repetitive keywords into the Alt Tag (or alternative tag – shown by words that appear when you hover over an image with you mouse pointer). The Alt Tag is meant to be a textual description of the image it is attached to. There is nothing wrong with tailoring the Alt tag to meet your keyword goals IF the tag is still understandable and if the change still appropriately describes the image. The offense occurs when an Alt tag has obvious keyword repetition/filler which a search engine can key in on as Spam.


#7: Comment Tag Stuffing
Definition: Comment Tags are used to include useful design comments in the background source code (html) when creating a webpage. These are suppose to be used only for adding technical instructions or reminders; however, in times past these tags were used to artificially increase the keyword count for targeted phrases. 


At one time there was some argument that this technique worked, but it has always been a “Black Hat” SEO technique which even then could result in placement penalties. Nowadays this technique will not help an SEO campaign, if anything it will be ignored or produce a negative result.

#8: Over Reliance on Meta Tags
Definition: Meta Tags is a broad term for descriptive tags that appear in the <Head></Head> of most webpages and are used to provide search engines with a concept of the page topic. The most common tags are the description and keyword tags. At one time, extinct search engines such as Infoseek relied a great deal on Meta Tags and many took advantage of this factor to manipulate rankings with relative ease. In today’s far more advanced climate the search engines place cautious weight on Meta Tags and when considering rankings Metas play only a fractional role. Some webmasters still consider Meta Tags the ‘end-all and be-all’ of ranking producers and forget to optimize the rest of their webpage for the search engines. With this line of thinking they miss that the search engines place far more importance on the body text (or visible text) of the webpage. This is a critical error that will ultimately lead to low or insignificant rankings. 


Note: An extremely common example of Meta Tag over-reliance are web sites that have been designed 


totally graphically and are devoid (or nearly so) of html text that a search engine can read. A webpage such as this will have no body text to index and may only provide a small amount of relevance to the webpage which ultimately leads to poor rankings. Over reliance on Meta Tags does not produce intentional search engine penalties, however, the simple act of ignoring other ranking principles often means a lower ranking. 


#9: Duplicate Content
Definition: This tactic is blatant Spam that is very common today. Essentially the webmaster will create a web site and then create duplicates of each page and optimize them differently in order to obtain varying placements. By doing this you are saturating the search engine databases with content that is essentially eating valuable bandwidth and hard drive space.


Duplicate content is a dangerous game often played by full-time marketers accustomed to trying to attain placements in aggressive markets. Avoid this tactic like the plague unless you are willing to sustain serious ranking damages if you get caught – which you likely will.

#10: Automatic Submission and Page Creation
Definition: 
– Automatic Submission is the use of automated software to submit a website to the search engines automatically and often repeatedly. 
– Automatic Page Creation is using software to create pages ‘on the fly’ using predefined content (body text, keywords, images etc) to create “optimized” webpages to target specific keyword rankings on the search engines.


At StepForth the word ‘automated’ is an abomination when used in reference to SEO. The fact is that automated SEO campaigns are not as effective as manual (by hand) optimization techniques AND such techniques often require the use of doorway pages to lead search engine users to polished marketing pages at the true destination page. In this case this is a double-offense by using the banned doorway page technique. My strong prejudices aside, lets take a short logical look at both tactics noted here:


a) Automatic Submission
Search engines make the majority of their profit from surfers like you viewing their advertising. Do you think that allowing automated submission tools to submit a web site (which bypasses SE advertisements) is in the search engines best interest? No, in fact the submission companies have had to upgrade their software repeatedly to try and subvert the search engines’ latest effort to stop their programs. There are also concerns about bandwidth because automated tools have been known to repeatedly submit sites and sometimes each individual page within a site.


All-in-all, this leaves the submitter in an unstable position where they may or may not have their submission ignored. This is not even considering the fact that automated tools claim to submit a website once a day or a week or a month! The cardinal rule of search engines… submit ONCE and it may take a while but the site will get spidered at some point (up to 2 or 3 months later – max). If within a few months a site is not listed, then resubmit. If a search engine is submitted to too often that it is Spam and frankly the website being submitted will not fair well. As for the major engines like Google… be patient and definitely don’t submit more than once if you can help it.


b) Automatic Page Creation
If a page is automatically created will it have the kind of quality content that search engines require for their index? Also, if the page is automatically created, will it not be using repetitive content? There may be a few incidences where there are some variable answers to these questions, however, I imagine the answer will be ‘No’ 99% of the time which instantly illustrates a poor and dangerous search engine optimization technique.

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SEO

Google PageRank Algorithm

The original PageRank algorithm was described by Lawrence Page and Sergey Brin in several publications. It is given by

PR(A) = (1-d) + d (PR(T1)/C(T1) + … + PR(Tn)/C(Tn))

where
PR(A) is the PageRank of page A,
PR(Ti) is the PageRank of pages Ti which link to page A,
C(Ti) is the number of outbound links on page Ti and
d is a damping factor which can be set between 0 and 1.
So, first of all, we see that PageRank does not rank web sites as a whole, but is determined for each page individually. Further, the PageRank of page A is recursively defined by the PageRanks of those pages which link to page A.
The PageRank of pages Ti which link to page A does not influence the PageRank of page A uniformly. Within the PageRank algorithm, the PageRank of a page T is always weighted by the number of outbound links C(T) on page T. This means that the more outbound links a page T has, the less will page A benefit from a link to it on page T.
The weighted PageRank of pages Ti is then added up. The outcome of this is that an additional inbound link for page A will always increase page A’s PageRank.
Finally, the sum of the weighted PageRanks of all pages Ti is multiplied with a damping factor d which can be set between 0 and 1. Thereby, the extend of PageRank benefit for a page by another page linking to it is reduced.
The Random Surfer Model
In their publications, Lawrence Page and Sergey Brin give a very simple intuitive justification for the PageRank algorithm. They consider PageRank as a model of user behaviour, where a surfer clicks on links at random with no regard towards content.
The random surfer visits a web page with a certain probability which derives from the page’s PageRank. The probability that the random surfer clicks on one link is solely given by the number of links on that page. This is why one page’s PageRank is not completely passed on to a page it links to, but is devided by the number of links on the page.
So, the probability for the random surfer reaching one page is the sum of probabilities for the random surfer following links to this page. Now, this probability is reduced by the damping factor d. The justification within the Random Surfer Model, therefore, is that the surfer does not click on an infinite number of links, but gets bored sometimes and jumps to another page at random.
The probability for the random surfer not stopping to click on links is given by the damping factor d, which is, depending on the degree of probability therefore, set between 0 and 1. The higher d is, the more likely will the random surfer keep clicking links. Since the surfer jumps to another page at random after he stopped clicking links, the probability therefore is implemented as a constant (1-d) into the algorithm. Regardless of inbound links, the probability for the random surfer jumping to a page is always (1-d), so a page has always a minimum PageRank.
A Different Notation of the PageRank Algorithm
Lawrence Page and Sergey Brin have published two different versions of their PageRank algorithm in different papers. In the second version of the algorithm, the PageRank of page A is given as
PR(A) = (1-d) / N + d (PR(T1)/C(T1) + … + PR(Tn)/C(Tn))
where N is the total number of all pages on the web. The second version of the algorithm, indeed, does not differ fundamentally from the first one. Regarding the Random Surfer Model, the second version’s PageRank of a page is the actual probability for a surfer reaching that page after clicking on many links. The PageRanks then form a probability distribution over web pages, so the sum of all pages’ PageRanks will be one.
Contrary, in the first version of the algorithm the probability for the random surfer reaching a page is weighted by the total number of web pages. So, in this version PageRank is an expected value for the random surfer visiting a page, when he restarts this procedure as often as the web has pages. If the web had 100 pages and a page had a PageRank value of 2, the random surfer would reach that page in an average twice if he restarts 100 times.
As mentioned above, the two versions of the algorithm do not differ fundamentally from each other. A PageRank which has been calculated by using the second version of the algorithm has to be multiplied by the total number of web pages to get the according PageRank that would have been caculated by using the first version. Even Page and Brin mixed up the two algorithm versions in their most popular paper “The Anatomy of a Large-Scale Hypertextual Web Search Engine”, where they claim the first version of the algorithm to form a probability distribution over web pages with the sum of all pages’ PageRanks being one.
In the following, we will use the first version of the algorithm. The reason is that PageRank calculations by means of this algorithm are easier to compute, because we can disregard the total number of web pages.
The Characteristics of PageRank
The characteristics of PageRank shall be illustrated by a small example.
We regard a small web consisting of three pages A, B and C, whereby page A links to the pages B and C, page B links to page C and page C links to page A. According to Page and Brin, the damping factor d is usually set to 0.85, but to keep the calculation simple we set it to 0.5. The exact value of the damping factor d admittedly has effects on PageRank, but it does not influence the fundamental principles of PageRank. So, we get the following equations for the PageRank calculation:

PR(A) = 0.5 + 0.5 PR(C)
PR(B) = 0.5 + 0.5 (PR(A) / 2)
PR(C) = 0.5 + 0.5 (PR(A) / 2 + PR(B))
These equations can easily be solved. We get the following PageRank values for the single pages:
PR(A) = 14/13 = 1.07692308
PR(B) = 10/13 = 0.76923077
PR(C) = 15/13 = 1.15384615
It is obvious that the sum of all pages’ PageRanks is 3 and thus equals the total number of web pages. As shown above this is not a specific result for our simple example.
For our simple three-page example it is easy to solve the according equation system to determine PageRank values. In practice, the web consists of billions of documents and it is not possible to find a solution by inspection.
The Iterative Computation of PageRank
Because of the size of the actual web, the Google search engine uses an approximate, iterative computation of PageRank values. This means that each page is assigned an initial starting value and the PageRanks of all pages are then calculated in several computation circles based on the equations determined by the PageRank algorithm. The iterative calculation shall again be illustrated by our three-page example, whereby each page is assigned a starting PageRank value of 1.
Iteration PR(A) PR(B) PR(C)
0 1 1 1
1 1 0.75 1.125
2 1.0625 0.765625 1.1484375
3 1.07421875 0.76855469 1.15283203
4 1.07641602 0.76910400 1.15365601
5 1.07682800 0.76920700 1.15381050
6 1.07690525 0.76922631 1.15383947
7 1.07691973 0.76922993 1.15384490
8 1.07692245 0.76923061 1.15384592
9 1.07692296 0.76923074 1.15384611
10 1.07692305 0.76923076 1.15384615
11 1.07692307 0.76923077 1.15384615
12 1.07692308 0.76923077 1.15384615
We see that we get a good approximation of the real PageRank values after only a few iterations. According to publications of Lawrence Page and Sergey Brin, about 100 iterations are necessary to get a good approximation of the PageRank values of the whole web.
Also, by means of the iterative calculation, the sum of all pages’ PageRanks still converges to the total number of web pages. So the average PageRank of a web page is 1. The minimum PageRank of a page is given by (1-d). Therefore, there is a maximum PageRank for a page which is given by dN+(1-d), where N is total number of web pages. This maximum can theoretically occur, if all web pages solely link to one page, and this page also solely links to itself.

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