with proper warnings and ratings i was able to come across stories including, yet not limited to (close your eyes if you don't want them burned out ) hard vore, extrem scat play, snuff, inflation, bukakke, diapers. all sorts of stuff. i don't believe there is alimit. if you deem your story a little harsh, just write a small paragraph explaning the content, and leave a few spaces to give room so others don't view the "bad stuff" immediately without scrolling down.