If you are purely using MSN, you may also experiment with aMSN.... it's a much cleaner looking app than Mercury (to me, at least). But it, like Mercury, has more support for MSN features than Adium does. To be honest, if you want MSN only and don't need video, even Microsoft Messenger is not so bad... 😱 I love Adium primarily because it allows me to be on all networks at once.