I was talking with Robert and we were saying Sony should make a deal with Valve to provide the back-end for PSN to handle friends, Voice chat, game invites etc etc. Seems like it would be a smart deal. Sony is behind the game, and Valve is pretty much on par and in some ways ahead of Live.
That's a pretty good idea, scrap the entire current setup and go with Valve's setup which is fairly complete, and standardize it across all games. Could be huge if that happened.