Horse puckey.
QT is a system component, made by Apple Computer.
People can hook up all sorts of stuff to it (such as this MySpace virus), but carrying manure in a bucket doesn't make the bucket bad.
In my opinion all software that insists on being terminal resident when not in use is Crapware. That includes the newer printer software. None of this crapware should be running unless the program is in use. It never needed to be in the past and it should not be now. The newest software will not even allow you to turn its TSR status off. You have to force it by some other method.
I'm not going to argue the point, here is a good link for starters:
http://secunia.com/advisories/21893/