I know this puts me in the minority but I don't like Facebook. I'd much rather spend my time reading an interesting, thoughtful blog post than the little dribbles of information that are being dashed off on a wall. I don't need another site to play games, Pogo has more than I can use now. I've got co-workers trying to add me as a friend who are not my friends!
For me, it's become more bother than it's worth so I will probably drift away from it...and not miss the wall at all.