After swearing off Twitter, I’ve ignorantly joined Pownce, the newest of the “web-based-delayed-instant-messengers”. Off the bat, I don’t see anything radically different, but I don’t want to make a judgment so quickly.
There is a Phake Calacanis already though, that’s a bonus. I’m pretty sure the real one isn’t even on there yet…
Also, I’ve got some invites to give away, so if you want one, let me know.