This site tends to not remove images that most people consider unfappable, which I admire. But I think the same sorta thing for people into the sub-guro categories (poop and eyeballs for nipples) would be deviantART scribble-scrabble drawings done with crayola markers on notebook paper, and horrid 90s-era photoshop looking manips. Since /d/ on 4chan started to allow most freakshow fetishes in recent years, a lot of the old userbase from those boards have moved over there, presumably because of the poor quality art clogging threads. Also the CP spam that stays up for hours at a time probably scares most of the uniformed away ;^_^