I'm so excited. What can I say? InviteShare.com, invitation to share, invitation to share. Once registered, you will have an invitation to all beta sites.
What Pownce, Joost, moola, 8apps, etc., etc., all in one go, get invited only in a few seconds, why wait? I just applied for a Pownce invitation and within seconds it was automatically sent to my email, just as fast as signing up for an email!