Tumblr has a huge porn community, and always has. I don't have actual statistics, but it's huge. In general, people on tumblr might have a regular, personal blo

Tumblr has a huge porn community, and always has. I don't have actual statistics, but it's huge. In general, people on tumblr might have a regular, personal blog, and then a side blog where they reblog and/or comment on/add captions to pornographic images, gifs and videos. In that sense, they can sort of curate porn that interests and appeals to them. The addition of this personal touch and intellectual component appeals to a lot of people, including a lot of women. But there are also various sex advice blogs, etc., which will be affected by this change as well, artists who do non-pornographic nude artwork, and potentially even various LGBT communities where sex can at times be a topic. There are various levels of NSFW-flagging on Tumblr: users flagging their own site NSFW, Tumblr marking a blog NSFW and the user having no way to change that, or enough individual posts being flagged NSFW by users and AI that Tumblr decides to call the entire blog NSFW.