I just deleted all PMs. I have zero PMs. I don't subscribe to the other features. I subscribed to AT Forums when the service first came out (I think I was on board the first or second day, for a whole year, $30 IIRC), but it seems like the bandwidth is OK on the regular server these days.
EDIT: Oh wait! I guess I do have a buddy list. I thought that feature died when my subscription expired. Well I'll be. . .