Yahoo! Messenger 11 [Final]

Features :

*Easily find or invite friends from other services to come chat with you
*Now you can chat with high quality full-screen video.
*Make free PC-to-PC calls and PC-to-phone calls for as low as 1¢ a minute (plus free voicemail!)
*Send text messages (SMS) to friends' mobile phones for free*
*Instant message with one friend, or conference in a bunch
*Show your style with emoticons, Avatars, audibles and IMVironments
*Use the built-in media player to watch web videos and view photos with friends
*Easy access to your conversation history from any device