PageRank is a link analysis algorithm which assigns a numerical weighting to each element of a hyperlinked set of documents, such as the World Wide Web, with the purpose of "measuring" its relative importance within the set. The algorithm may be applied to any collection of entities with reciprocal quotations and references.
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Google might use the following to determine the ranking of your pages:
• The frequency of web page changes
• The amount of web page changes (substantial or shallow changes)
• The change in keyword density
• The number of new web pages that link to a web page
• The changes in anchor texts (the text that is used to link to a web page)
• The number of links to low trust web sites (for example too many affiliate links on one web page)
Domain Name Consideration:
• The length of the domain registration (one year vs. several years)
• The address of the web site owner, the admin and the technical contact
• The stability of data and host company
• The number of pages on a web site (web sites must have more than one page)
How Google might rate the links to your web site:
• The anchor text and the discovery date of links are recorded
• The appearance and disappearance of a link over time might be monitored
• The growth rates of links as well as the link growth of independent peer documents might be monitored
• The changes in the anchor texts over a given period of time might be monitored
• The rate at which new links to a web page appear and disappear might be recorded
• The distribution rating for the age of all links might be recorded
• Links with a long life span might get a higher rating than links with a short life span
• Links from fresh pages might be considered more important
• If a stale document continues to get incoming links, it will be considered fresh
• Google doesn't expect that new web sites have a large number of links
• If a new web site gets many new links, this will be tolerated if some of the links are from authorative sites
• Google indicates that it is better if link growth remains constant and slow
• Google indicates that anchor texts should be varied as much as possible
• Google indicates that burst link growth may be a strong indicator of search engine spam
For more details on Page Rank visit at www.halfvalue.com and www.halfvalue.co.uk
http://www.selfseo.com/story-19296.php
