I know that I won't, because I don't like having crowds at my house and I can't think of another venue. I don't really want to do the restaurant-thing, because I would like something casual, where people could wander in and out as the afternoon/evening wore on. (I mean, some of my friends have very little money. I'd hate to have them not come because they can't afford to.)
Of course, then there's the question of who would bother to come? My friendship groups are so segmented (the Old School group, the Lush group, the Art Kids, Church Folk, etc) that I have no idea how well cross-pollination would work, and I honestly don't know if more than one or two people from each group would show up, once you account for conflicting plans, last minute cancellations, "friends" who don't actually like you enough to go, etc.
Naaaaaaaaaah. Just thinking about this now is too much work for me. I don't think I want to be bothered with the effort of a birthday party.