Facebook will go the way of myspace in another year or two, no one will remember it. I dont believe for one minute the number of users they say they have or the revenues they claim to have. Wait about a year or two ...or maybe less and you will see FB on the pink sheets if even still on the market at all. It's a failed business model with a clown running it.
I opened one recently to see what happened to all my college FSAE pals, where they ended up, etc.
It seems a bit odd, laying your life out there for anyone to view (not everyone elects to keep their info private), having every comment and picture broadcasted to your own personal "network".