As i’ve said few posts ago, i’m using Psi+. Psi+ uses jabber servers (for example jabber.rueckgr.at), and with jabber you can use a lot of services (called transport): msn, google talk, yahoo, Facebook, etc… etc…[/quote]
MSN chat also works in Caya.
Look at that. Not only is there software for you to use in Haiku, but you even have options!