How does PageRank Relate to Relevancy or Rankings?
Some people believe that PageRank directly relates to relevancy, but it doesn't. In the past the Google algorithm was more reliant upon PageRank than it is today, but currently PageRank is a small factor in the Google search algorithm.

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!!!Currently the biggest factor in Google's search relevancy is getting many keyword rich links from a large variety of C block IP addresses. Getting a bunch of links from a single source is easy. Getting links from many different sources is much more time consuming and expensive.