Honestly, iChat is worthless to me UNLESS it supports MSN eventually. Only one of my friends uses AIM exclusively and it's only because he's a fanatical Mac guy. Everybody else thinks AOL and AIM sucks, even my girlfriend removed it when I installed it on her computer. Everybody uses MSN because everybody uses Hotmail.
The worst part is, you can get an email account at yahoo.com that has more space, no spam and better services that'll actually work on MSN but nobody seems to care.
Anyways the point is, iChat needs MSN support. While I'm on the subject though, Mail.app needs optimized code and the ability to NOT use AppleDouble encoding. Until it has that, I'm using Entourage.