eBuddy Lets You Access Your Buddy List From Anywhere
It is a free Web based messenger that will let you chat with your existing buddies, and no registration is required. The Web version only requires a Javascript enabled browser, and it can be accessed even from behind a firewall. You simply login as you would with your regular account. The mobile version works with any device that supports xHTML or WAP, and this includes mobile phones, smart phones, wireless PDAs, and even the Sony PSP or Nintendo DS.