A few days ago I was invited to Joost. I haven’t played too much with it yet but I like what I’ve seen so far, especially the interface. If you’d like to check it for yourself, leave your email in the comments and I’ll send you an invite!
Works on PCs running Windows XP/Vista and Intel-based Macs running OS X 10.4 or later.
Invites left: 0
Update: Wow, that was quick! Edi, Ralph and micha I’ll send your invites soon! Andreas sorry you were 1 minute too late :( I’m sure the other guys can invite you when they receive theirs in a few days! ;)