PageRank
From Search Engine SEO SEM
PageRank™ is a registered trademark of Google, Inc.
Google PageRank reflects Google's view of the importance of web pages by considering more than 500 million variables and 2 billion terms. Pages that Google believe are important pages receive a higher PageRank and are more likely to appear at the top of the search results.
PageRank also considers the importance of each page that casts a vote, as votes from some pages are considered to have greater value, thus giving the linked page greater value. Google have always taken a pragmatic approach to help improve search quality and create useful products, and their technology uses the collective intelligence of the web to determine a page's importance.
Relevancy is determined by over 200 factors, one of which is the PageRank for a given page. PageRank is the measure of the importance of a page based on the incoming links from other pages. In simple terms, each link to a page on your site from another site adds to your site's PageRank. Not all links are equal: Google works hard to improve the user experience by identifying spam links and other practices that negatively impact search results. The best types of links are those that are given based on the quality of your content.
