have had 10 invites for Quora, a social search site launched earlier this year by a bunch of ex-Facebookers (including former CTO Adam D’Angelo and Charlie Cheever (who previously led Facebook Platform and Facebook Connect)–and which was just funded at an $86M valuation. Put your email address in a comment or communicated it to me by some other means if you’d like one. I’m pretty sure all new users get 10 invites, so please share the love if I run out. Also, I believe you need to have a Facebook account in order to register (using Facebook Connect).
I’ll write more about Quora when I’ve had a chance to play with it myself.