Or to use some web service to detect nudity in images.
I was getting my college degree during peak goatse and have gotten good at tuning out goatse, so it hasn't hurt my impression of the site. It's a great idea to bring usesthis to the masses, and I wish success for OP. I'd consider excluding things that are primarily gaming because there are already places for people to show off their gaming rigs (such as battlestations on reddit).
IIRC Google Cloud, Azure, and (least certain of this one) AWS have machine learning driven adult image detection (among other things, like recognizing famous people's faces) as a service.