Compute Google's PageRank 5 Times Faster
Kimberley Burchett writes "CS researchers at Stanford University have developed three new techniques that together could speed up Google's PageRank calculations by a factor of five. An article at ScienceBlog theorizes that "The speed-ups to Google's method may make it realistic to calculate page rankings personalized for an individual's interests or customized to a particular topic.""
Umm... For the most part Stanford Researchers == Google Researchers.
Google came about from a stanford research project. There's a good chance the people who are responsable for the speedup either allready knew about pagerank from working with the founders, or signed an nda.
I haven't read the article, but I bet it hints at that.