eh, these users always paranoid about their IP privacy while they have no reasons to. i used to sit @ freenode, most users request hostmasks(cloaks as it named there)... i never really understood why. if you really have something interesting on your IP, that makes someone mad about it and he begin to DoS/DDoS it, then, yes, there is a point in it. otherwise it doesn't make sense.
well, in fact, yes, downloading something important from some serious guy's server may result in... something serious
it depends anyway