I really enjoy Facebook, myself. I've been in touch with so many people from different eras of my life, and the best part is that I don't have to really go out of my way to keep in touch with them! How perfect is THAT for hermit-like me?
I can just update my life, look at others' updates and photos, make little comments here and there. So nice. Between that and twitter, I can actually keep people in my life, for once.
MySpace seems a bit more youthful and personality driven? I don't have an outpost there but will at some point, so that I can at least be able to write about it. lol