Eh, wouldn't say there isn't exactly any troll or hater. Maybe those obvious trolls are just shut down fairly quickly. But I have seen a fair amount of rude people and got in argument with a few myself. Been called name before for trying to see things from both side, or have my opinion called invalid because I don't belong in specific group of people or have a different opinion than them. I won't go specific.
Tapas forum is a nice place for your average discussion on webcomic making, but just avoid very opinion-based topic or controversial topic, yea?