https://www.cnbc.com/2018/02/08/reddit-pornhub-ban-deepfake-porn-videos.html

Major websites including Reddit and Pornhub have moved to clamp down on the practice of posting fake pornographic videos where a user superimposes a person's face over actors in a X-rated film.

The videos, which are known as "deepfakes", had a big following on Reddit, with a forum on the site dedicated to them. That forum, or subreddit as it's known on the site, has now been shut down.