[brynedwards]

There's this by Yahoo:

https://github.com/yahoo/open_nsfw

[drdaeman]

> For this reason, the model we describe below focuses only on one type of NSFW content: pornographic images.

It tries to detect a subset of pornography. Others may have different opinions, but personally I wouldn't relate porn to a category of "worst of humanity".

[brynedwards]

Good point, I guess detecting something as e.g. showing child abuse would be much more difficult.