Could it be a requirement that if someone is posting pictures/videos that some people might find disturbing, they should post a warning beforehand, either in the title or before the link? If people don't know what they're in for when they click on the link/open the thread, they could get very upset. It's not like we're posting sadistic things, but different people have different levels of tolerance when it comes to anything to do with animals or medical oddities or something. It doesn't even have to be a requirement. Maybe it could just be a really strong suggestion.