Heres my
i see no reason to use anything other then ICQ.
yahoo IM is great.... but...in my opinion, the industry standard is ICQ.
I dont even mess with aol or yahoo IM.....
not to mention.... Ive got some people in my icq list, that have trillian, 90% of the time they get my messages, and they must have settings that makes it look they are always online, becuase icq says they are online and available 24 hours a day.
if you got family on aol or yahoo, just load the program up seperetly.
if you want to do business, stick with icq.