We have suspected it for some time. We see sites with lower Google page ranks outperforming higher ranked pages all the time. We knew that the public page rank that we see is months old.  Sometimes you see an article that articulates the point so well that you just need to link to it. The great people at the Hubspot Blog did a great job of explaining:

Why Google Page Rank is Now Is Now Irrelevant

Tagged as: Internet Marketing, SEO