Lots of buddy icons can be used in your favorite instant messanger: AIM, MSN, Yahoo or as a Photo in ICQ.
Instant messanging is the best way to find new friends.
You can upload your icons, smileys, expressions and programs.
Tons of new buddy icons and smileys are added almost daily on Buddy-Icons.info.
You can also find a lot of avatars for MySpace.
A lot of College Icons can be found here.