Relax! It is important to understand a couple of basic ideas when undertaking the difficult task of optimizing a website for Google:
The world does not revolve around you (in other words, Google doesn’t hate you…you’re just doing something wrong or you need to be more patient).
PR and SERPs position (Search Engine Results Position) are not directly related. You do not need an extremely high PR in order to achieve favorable SERPs, and on the flip side, havng an extremely high PR will not guarantee favorable SERPs.
PR is not the end all be all in terms of gauging the “potency” or “relevancy” of a particular URL. In fact, visual PR has absolutely nothing to do with relevancy. It is simply a measure of the quantity and quality of your backlinks irregardless of relevancy. Also, while visual PR does measure the “potency” of your site’s backlinks, there are other critical factors that must be considered.
The “lag” associated with PR makes it that much less accurate in terms of gauging the “potency” of a particular URL.
Before moving on, let me define some of the terms that I am using in this article, so that there is no confusion. We’ve already defined PR “lag, but there are few other terms that are worthy of mention:
Visual PR refers to the value reflected in the green bar located on the Google toolbar. It is a visual representation that ranges from 0 to 10. It is important to note that visual PR is not used in Google’s ranking algorithm. Instead, a different and more complex PR calculation (that is not available to the public) is used as part of Google’s SERP algorithm.
Potency refers to the ranking power of a particular URL or a particular backlink from that URL. For example, a page on Amazon.com is much more potent (in terms of ranking well in Google) than a link from bobby’s-chicken-ribs-shack.com.
Google Optimization 
