Persistent.im went live today, offering a very cool cross-platform IM tool that works between AIM, Windows Live Messenger, Yahoo! Messenger, ICQ, Jabber, Google Talk and MySpaceIM by delivering messages through a conference bot. This works just dandy on any of your mobile IM clients – just add the conference bot to your friends list, and messages will be sent and received between participants through it. With so many different platforms becoming popular, having common channels is increasingly important. Be sure to scope out our multi-service BlackBerry IM client review for a few more options along that vein. Persistent.im is free and running its beta, so go ahead and sign up if you like your existing chat client but want to get in touch with buddies elsewhere, too.