I came across a small site without a single Inbound back-link in yahoo or google and it has a PR5. I changed my user agent to goolebot 2.1 to see if black hat was in play, but no difference.
The site is extremely themed, only a few pages and focuses on the history of a particular type of machine.
Has any one else seen this behavior?
This seems to me to be a game changer unless I am missing something.
I will be happy to PM moderators the site if you wish