Facebook Explosion?

I got a Facebook account a year or so ago when I started the Haas program at Berkeley and when a good friend of ours took a job on campus where she was interacting with students all the time (so using Facebook for most of the day). Since then I’ve had about one friend and really didn’t spend a lot (any) time on it. Then in the past couple of weeks I’ve gotten friend requests from a half dozen or so friends. Oddly, this isn’t just an isolated cluster of people at work, its been people from college, even people from my old High School.

Kind of odd, I wonder what has caused this newly formed Facebook interest?

I still need a way to federate Facebook, LinkedIn, Yelp, etc.