Are you talking about chat or instant messaging? Those two are different in my view. We use IMs a lot at work. Probably even more than email. Chats get created

Are you talking about chat or instant messaging? Those two are different in my view. We use IMs a lot at work. Probably even more than email. Chats get created every now and again, but realistically, it's much less used than IM. The only place I see chat as really being useful, is for support on websites and applications. However, again it's mostly one-to-one, so it's basically a temporary IM.