I'll admit it here, I've trolled in the good/bad places on the net and been trolled myself. I've trolled in real life (I like to stand beside street preachers and yell along side of them). Granted, alcohol is usually involved and I generally feel bad about it afterwards.
It happens, sometimes it's just to get a rise out of someone or just crossing that line between sarcasm and trolling.
This guy did it and got to talk to a CEO.
Steve Jobs Offers World 'Freedom From Porn' - Apple - Gawker
All and all, when you have complete freedom of speech and anonymity, you will find yourself surrounded by trolls.