Using ichat for msn, twitter, irc, icq etc – iChat can use jabber (xmpp). xmpp can use ‘transports’ to let you connect to other networks, like MSN, icq, irc, twitter, etc.
Update: there is a way to do this now without having to resort to using a jabber service.
You can download a plugin that will enable msn on your iChat / imessages
You can download a plugin that will enable msn on your iChat / imessages
WORKS!!!