Features

-displays alerts when buddies on buddy list in iChat become online, away, idle, or offline
-turns on and off notifications as you wish from growl prefpane
-shows a display picture in the notification
-shows away messages when accounts change to away
-distinguishes between jabber account and jabber transport so it displays the right name
-windowless and dockless with preference pane
-best of all, it's free you can make a donation if you wish