Who care?
How long are people going to keep believing that information you share with people who share with other random people is ... "private"?
I've friended spam-bots entirely for shits giggles. Seriously.
I like Facebook a lot. Seriously. I'm there pseudo-nonymously but constantly. But naturally I post nothing I don't want totally public 'cause nothing on Facebook is private to start with.
Define "privacy" in the context of Facebook. You can't and that's the point.