Tutorials > Search Engine Optimisation (SEO) > How does Google rank results?
How does Google rank results?
Google utilises a system called Pagerank that it's founders developed whilst at Stanford University. It forms the basis of all searches on Google.
Pagerank, what is it?
Pagerank is a value that represents how relevant (important) a page is on the internet. The thinking is that when a page links to another, it is casting a 'vote' for the other page. The more votes cast, the higher the rating and important the page must be. But each link is not weighted the same as the other, the importance of the page that is linking / casting the vote determines how importance the vote is. When Pagerank is calculated, the relevance of each page is taken into account.
Google uses Pagerank to determine a pages importance but this is not the only measure Google uses to calculate a page's ranking in search results.
Important to remember: Not all links are counted. Links from "linkfarms" are not counted and some links can even get a site penalised in Google's ranking's. Google realises that you may not be able to control who links to you, but you can definitely control whom you link to, so don't link to linkfarms and other reciprocol sites that are solely used for linking. Remember to check a sites PR rating before you link to them.
Search Results Integrity
Google uses complex automated methods to determine pagerank and tampering with the results is extremely difficult. Relevant ads are run above and next to the results but ads are not placed in the results themselves and nobody can purchase a higher pagerank from Google to get themselves listed above someone else in the results. This helps ensure good quality search results.
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