I hate obnoxious software--the stuff that wants to reset your home page, put icons all over the place, auto-start itself, and plop piggyback software all over the place.
Yahoo! Messenger is all of the above.
And some of this junk, such as iTunes and AIM, updates every two weeks, resetting all the preferences to obnoxious jerk. I fully expect YM to do that too, since they have not missed any other obnoxious notes.
I am an economist, so I understand there is no such thing as a free lunch. Why!? Why!? Why does life have to be so fair!?