The Palm Pre actually had a really nice mobile messenger. It synced with Address Book, supported SMS, Jabber, Facebook Messenger (back when it was jabber), aim,

The Palm Pre actually had a really nice mobile messenger. It synced with Address Book, supported SMS, Jabber, Facebook Messenger (back when it was jabber), aim, and others. It would seamlessly switch protocols based on how the contact messaged you. Like most things with the Pre, it was way ahead of its time.