This is something I think we'll definitely need to discuss more to try to figure out a good definition (and I know it's not simple at all), but in general I'd love to be able to have groups that support "adult" discussions, but not ones that are just for posting things for sexual gratification, if that makes sense. So for example, a BDSM discussion community would be fine, but not one solely for posting links to BDSM porn.

It's not that I'm opposed to porn or anything, but I've seen how many issues (legal, spam, etc.) can be attracted by directly supporting porn, and I feel like it would push in a very different direction from my main objectives for the site. There are plenty of other places people can find porn on the internet.

> This has some interesting possibilities—someone filtering out all nsfw posts would also not see anything tagged nsfw.gore, but someone else could choose to filter only nsfw.gore and still see posts with other tags like nsfw.nudity or plain nsfw.

That section from "Mechanics" [0] makes it sound like there will be no adult content ban. There is more that makes me think that, but this makes it pretty clear.

[0]: https://docs.tildes.net/mechanics

There have been several discussions about that (and about images in general). Right now the consensus is that there are far better places for porn all over the internet and it's a niche that brings in too much negative behavior. In a nutshell, it's not something they are interested in having on the site.