Academia.edu

I just got an e-mail about a new social media things called Academia.edu. The organizers state:

"Academia.edu was founded by Richard Price and a team of people from Stanford and Cambridge University. The aim is for the site to list every academic in the world, together with their university and department affiliation."

But like LinkedIn, I'm not yet sure whether it is really much use for anything else but being seen to be there. From a quick look around, it's overwhelmingly graduate students who are members despite the claim that: "Stephen Hawking, Richard Dawkins, Noam Chomsky, Paul Krugman and Steven Pinker have all added their names to Academia.edu's tree recently, and so have 70% of the Nobel Prize winners for 2008."