I always think back to that time when Zuck was on stage a couple of years ago, and he was talking about user-generated content, and he slipped, and referred to it as Facebook's. There you go. Anything you put on their site is their property, to do with as they like. I really think their days are numbered. Not anytime soon, but eventually, they are going to become as obsolete as Friendster, Bebo, and MySpace are now, but first a new social network that is built in that same style must emerge.