A nice analysis of how Facebook works best:
Yeah, [Facebook] sucks ass if you use it wrong. Don’t do that. Keep connected only to people who are active, intelligent participants on the site; jettison everybody else. Facebook friends are not real life friends. You can unfriend somebody and keep their number in your phone. That’s allowed. Then, pursue lofty ambitions….
Facebook should not be a timesink where you slowly drown in all the half-remembered named of your youth. It’s a community like any other. What makes it great is that you control every member of your own community. Don’t like a contributor? Kick them out! And you’re left with a customized circle of the most wonderful people ever. (This works unless you don’t know any wonderful people.)
Bingo, that’s just how I use it. And I recognized that quote from the Metafilter thread too… Lol.