Yeah, it'd be nice if IM just settled on some interoperable basis. I think there is an eternal need for a new chat app (as each new generation of school children create their first accounts on some service their parents aren't already on, and someone will fill that gap) but I liked the years when I could just add another account to adium and manage it that way. These last years it just been accounts dying off, and the new smartphone apps not really working well in my desktop client :(