Enter Nimbuzz. Wow. Do yourself a favour and give this one a try.
*Currently support MSN and Google Talk - in one interface!
*AIM / Skype / Yahoo coming soon - it is only version 0.9.1
*as stable as rhino
*run multiple chats at once / conference chats
*runs in background
*apparently the ability to "page" users even if they're not logged in (something about adding a particular number to your contacts - interesting.
*SA point of presence for VOIP routing. Dial a local number and they route the remainder of the call over the internet.
*Light on bandwidth.
*Slick, professional and 2.0'ey interface.
Superb. Best I've seen yet. Puts others to shame.
GET IT HERE!