A WebmasterWorld thread reports that one person spotted a product that is being sold under the claim that it is "Powered by Google PageRank Certification" of "PR=6." You say what? Yes, a product is claiming it has PageRank certification from Google with a PR of 6.
The product is on a site called ExamSoon.com and here is a screen capture:
How funny for those who know this is a joke or just there to fool some one. But to those unaware - there is no such thing as Google PageRank certification.
Forum discussion at Google Webmaster Help.