Posts Tagged ‘Page Rank’

Search engine optimization-Page Rank

Tuesday, July 15th, 2008

Search engine ranking algorithms are closely guarded secrets, for at least two reasons: search engine companies want to protect their methods from their competitors, and they also want to make it difficult for web site owners to manipulate their rankings.

That said, a specific page’s relevance ranking for a specific query currently depends on three factors:

* Its relevance to the words and concepts in the query
* Its overall link popularity
* Whether or not it is being penalized for excessive search engine optimization (SEO).

Examples of SEO abuse would be a lot of sites linked to each other in a circular scam, or excessive and highly ungrammatical stuffing with keywords.

Factor 2 was innovated by Google with PageRank.  Essentially, the more incoming links your page has, the better.  But it is more complicated than that:  indeed, PageRank is a tricky concept because it is circular, as follows:   Every page on the Internet has a minimum PageRank score just for existing.  85%  (at least, that’s the best known estimate, based on an early paper) of this PageRank is passed along to the pages that page links to, divided more or less equally along its outgoing links.   A page’s PageRank is the sum of the minimum value plus all the PageRank passed to it via incoming links.

Although this is circular, mathematical algorithms exist for calculating it iteratively.

In one final complication, what I just said applies to “raw PageRank.”   Google actually reports PageRank scores of 0 to 10 that are believed to be based on the logarithm of raw PageRank (they’re reported as whole numbers).   And the base of that logarithm is believed to be approximately 6.

Anyhow, there are about 30 sites on the Web of PageRank10, including Yahoo, Google, Microsoft, Intel, and NASA.  IBM, AOL, and CNN, by way of contrast, were only at PageRank 9 as of early in 2004.

Further refinements in link popularity rankings are under development.  Notably, link popularity can be made specific to a subject or category; i.e., pages can have different PageRanks for health vs. sports vs. computers vs. whatever.  Supposedly, AskJeeves/Teoma already works that way.

It is believed that Inktomi, Altavista, et al. use link popularity in their ranking algorithms, but to a much lesser extent than Google.  Yahoo, owner of Inktomi, Altavista, Alltheweb, is rolling out a new search engine, which reportedly includes a feature called Web Rank.  More on how that works soon.

We know that practically but what about ethically? And how does Google decide which inbound links are more important than others?

Tuesday, July 15th, 2008

The first question is, is it ethical and that same question could be posed to professional journals in their system of citing authors and experts. The notion of citation and reference is what Google’s Page Rank is based on.

Seo:Analyze your Competition

Monday, July 14th, 2008

Website linking structure and number of links pointing to your site or page is crucial to ranking High in Google and if you rank good in Google, chances are you’ll do good in Yahoo and other search engines but top 3 search engines that will bring most traffic are Google, Yahoo and MSN. Analyzing your competitors is important and included in Free SEO tips because search engines do analyze incoming links to your website as part of their ranking criteria which is called Page Rank (PR).

So what other websites are doing to rank on top of search results. In order to find out you need to gather a significant amount of data about the top ranking sites for whatever keyword or phrase you are trying to optimize your page for, like:

1. Competition’s rank in the Search Engines Results for given keyword
2. The number of incoming links to the site’s home page, not including

internal links.
3. What keywords they use in the title tag
4. Number of links containing keywords in the link text
5. PageRank of linking pages
6. The Alexa traffic ranking

Most of this information can be collected free by querying Google and Yahoo (Read about it in this Analyzing Individual Keyword Phrase article) and using free seo tools but it is very time consuming and you can’t get all data in one place.

I use This SEO Tool that can easily crawl a Web site and compile statistics on keyword usage throughout the site with single click of a mouse and all data is displayed in one window.

SEO:Link Popularity - Search Engines Page Rank Technology

Monday, June 30th, 2008

What is Link Popularity?

Link popularity literally means the popularity of links to your site on other web sites. The more popular your site is - especially with well ranked sites, the higher will your site be ranked. For this reason we prefer to call link popularity as link quality. Most search engines decide the popularity of your individual site pages so you need to build up links to all your major pages. Thus page ranking will vary for your site pages and keywords.

Search Engine Optimization

To optimize your site for search engines, your pages should have relevant content with all related keywords appearing as valid reading matter. If your site doesn’t have quality content or you have just repeated your keywords without any sense, your page rank will be affected or worse you could be black listed by the search engines.