MobileChat is tan AIM instant messenger application for the iPhone.

Release notes:

Localizations (English, Italian, French)
UTF8 Character Support
Conversation Themes
Added WiFi Keep-Alive option
Added XMPP Options for Plain Auth and TLS
Added MSN “HTTP Method” Option
All protocols allow you to specify the server and port now
Changed Network Detection
Fixed iPod Touch chat bubbles
Added sound files
Correct handles line breaks
Fixed HTML stripping
Fixed text size detectiong
Fixed clear history crash