Just to clarify, the skype chat was just an idea, Lili. So I wouldn't worry about it (and it's fine if you don't want to get one simply for the sake of a chat.)
I will say however, that MSN did send out a message stating that it would integrate with Skype, or something to that effect (I will read it more), so if we did happen to want to continue to use MSN, we'd have to convert to skype. But there are other chat agents out there, but we'll cross that bridge when we get there~