||= Protocol =||= Available =||= Away =||= Invisible =||= Busy =||= Avatar =||
||= AIM =||
||= Bonjour =||
||= Gadu-Gadu =||
||= Google Talk =||
||= Groupwise =||
||= ICQ =||
||= IRC =||
||= MSN =||
||= MXit =||
||= MySpaceIM =||
||= SILC =||
||= SIMPLE =||
||= Sametime =||
||= XMPP =||
||= Yahoo! =||
||= Zephyr =||

See Alo
http://en.wikipedia.org/wiki/Comparison_of_instant_messaging_protocols