it's so plus easy !
Show your difference into buddy-list of yours friends.
Just use friend-icon as avatar...
"2S Emotions" friend-icons for Yahoo! Messenger :

2S Smile
2S Cool
2S Nothing To Say
2S Music

2S Hehe
2S Grimace
2S Haha
2S Love

2S Sad
2S After Boom
2S Faint
2S What

2S Adore
2S Cry
2S Angry
2S Shame

2S Misdoubt
2S Sleep
2S Stop
2S Effort