There's thoughtful trolling. You know, the kind of trolling that likely infuriates some people, but has redeeming qualities. Think here Phil, Gabe, and Paul. Brian Carter is even known to engage in some thoughtful trolling every now and again. This kind of trolling I have no problem with.
Then, you have just annoying fucking trolling, like when you just post stupid/random stuff just to post it. I've seen Ringo Le Douche do this twice now in just the past day. Get the fuck out of here with this shit. If you're just being annoying to be annoying, then you should get whacked.