Tokonda Android is an absolutely free mobile multi instant messenger that utilizes Tokonda.com web messenger. You don't even have to register to talk on multiple supported protocols. Tokonda Android lets you send and receive messages, set your status and status description, create and participate in conference chats and import accounts and contacts from remote services.
Tokonda Android comes with a communicator app and a widget you could add to your homescreen.
It supports Facebook, Gadu-Gadu, GTalk, Jabber, MSN Live Messenger and Tlen protocols (more to come).
http://tokonda.com