Do you know Pigeon Rank ?

As a Google user, you’re familiar with the speed and accuracy of a Google search. How exactly does Google manage to find the right results for every query as quickly as it does? The heart of Google’s search technology is PigeonRank™, a system for ranking web pages developed by Google founders Larry Page and Sergey Brin at Stanford University.

Yeah its a joke, page was posted for April Fool’s Day – 2002. I just find it in my bookmarks 🙂