200 people, WOW!!
Out of the bunch of messenger programs in Trillian, I mostly use AIM, and MSN. Friends that have IRC never use it, and other people don't know how it works - so they WON'T use it
ICQ I still have a few friends on - but most have gravitated towards using MSN.
Yahoo! I almost always refuse to load, UNLESS for a specific purpose such as voice/video chatting with relatives.