One of the more confusing SEO tools available is Google PageRank. Due to the availability and popularity of the PageRank icon in the Google Toolbar, many falsely assume that PageRank (offering a score of 0-10) is the primary indicator of a website’s position on a Search Engine Result Page, or SERP. It is, in fact, not.
Huh? Come again. [UPDATED: 15 April 2016]