Social software, what's that? Online groups, how do they work?
Clay Shirky, of Many2Many, gives the lowdown. Cruise through this 10-minute talk, Google the terms you don't know and get back to me. Let's talk.
He's on again on the subject of Wikis. This time try wikipedia first (Read an entry where You know more than They do. Edit it. You are Them) then read why this works. Talk to me.