I think GMail had a similar very long-lived invite-only sign-up mechanism. I'm sure part of it is you don't want to join a social network thing with zero social

I think GMail had a similar very long-lived invite-only sign-up mechanism. I'm sure part of it is you don't want to join a social network thing with zero social connections. If anyone needs to get in, plenty of invites left here: http://goo.gl/WTu3Y http://goo.gl/WTu3Y