Pornographic image hosting service Tumblr announced they would be banning porn from their platform on December 17th, and they have already set loose a porn banning AI on their platform to lulzy results (archived). Not only is the AI apparently incapable of telling porn boobs from medical or arts boobs, it can't distinguish puppies and kitties from pussy. Tumblr's ban on pornography comes shortly after Tumblr's app was banned from Apple's appstore following the discovery Apple employees were viewing child pornography on Tumblr.
Tumblr brands itself as a mid-micro blogging platform and its userbase is composed of hamplanets viewing softcore fetish porn, Mircea Popescu sharing normal porn found in the wild, and apparently Apple employees viewing child porn produced by and for law enforcement.