[Tonfish]

Well, I didn't mean an interface which shows everybody's msn address to everybody. Only the parnters of your msn could see you in game, that way, there's no "gold spamming" problem, there is no "advertising" problem, and blizzard really doesn't loses one of the aspects of the game. However, you and the previous posts have a point about the sandbox and security problems. But I'm sure blizzard is capable of dealing with these problems and they can prevent them from happening.

About the icq/aol problem: I don't think that blizzard would implement all of them if they wanted that. But if they only implement msn, then a lot of players would switch from the alternatives to msn and that means a huge business to msn. BUT if blizzard implements them, then maybe the user will have to choose wich program he wants to use, before he logs in. But I think that's only a minor issue and it can be solved in a hundred ways or more.