You have a Facebook right? It's part of our culture. You here people say, "Yeah, I facebooked them and they are totally fat now!" or "on facebook last night I…" it's amazing. It's taken over. I even heard a guy call it "F Booking" which sounded really crass, but try it, it's much easier to say.
When I was standing in line to sign up Kiara for Kindergarten I had a "Facebook" conversation with some soccer moms that made me think it's really not that cool anymore. But, until someone starts the next underground social network, it's what I'll use to connect to people with.