27 June 2008 View Comments

Google's PageRank

Google believes in giving its users relevant search results rather than results that have more content or irrelevant content. An important factor for effective search engine optimisation is having relevant web pages on a website, which encourages Google’s search engine to spider the web pages successfully and only present the most relevant pages to the user, giving the web page a high PageRank.

Google’s PageRank is a numeric value that represents how important a page is on the Internet. Google works out that when one page links to another page, it is effectively casting a vote for the other page. The more votes that are cast for a page, the more important the page must be. Also, the importance of the page that is casting the vote determines how important the vote itself is.

Google calculates a page’s importance from the votes cast for it. How important each vote is taken into account when a page’s PageRank is calculated (Google toolbar). PageRank is Google’s way of deciding a page’s importance. It is significant because it is one of the factors that determine a page’s ranking in the search results and how high up they come in the organic search.

Also, a website that has a higher PageRank is distributed between its pages by internal links. The more pages that a site has, the more PageRank it has, however, this counts for pages that Google knows about, therefore any pages you have that are not being spidered will not count towards a website’s PageRank.

On the other hand, pages with good content are a must, as there are certain types of pages that should not be added. These are pages that are all identical or very similar. Google considers them to be spam and they can trigger an alarm that causes the pages, and possibly the entire site, to be penalised.

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