cool but destined to the same fate as meebo. the major IM players will never backdoor each other with out-of-agreement access to each others' users. if they wanted to, they could have all been doing that years ago, on mobile too. don't try to out-reason things, just accept that even though X and Y could interract trivially with open-source access libs, they would rather sit in a room for six months and do a one-off deal. so unless these guys get their own rev model, they will end up just like meebo...a cool service that is immune to acquisition