Mick, where did you get the idea that Facebook was owned by the CIA? It was started by a bunch of Harvard sophomores, the head guy is Mark Zuckerman, the CIA has nothing to do with it.
I'm on Facebook. It's fun, nothing like Twitter, a bunch of friends exchanging pictures and stuff like that, it's as revealing as you'd like it to be. It's also a good way to reconnect with people from your past, you an find lots of people from all age groups and interests on there. I'm not advocating it, if you don't like it, you don't do it, but for those of us who do, it's just fun.