The problem with the internet is that it is open to pretty much everyone, especially image board software based sites. Do you know why goatse.cx got suspended? Because the complainant saw it pop up in the online fora of the United Nations.
What I want to say is that trolls, smutpendlers and everything that is not dear to the eyes of some will eventually find its way along on the internet. Sure, on some sites with little traffic months might pass before this happens, but in the end, it will, if only for a little time.