Mature stories are allowed, but do not post anything NSFW here, unless it is a fic. (Wait, do Mature stories count as NSFW? I'm so confused. ) I figured it out, you can post Mature fics, but you can't link to Mature fics unless the group is NSFW, and, of course, it's not.

Anyway, I made folders for Mature stories. If your story is Mature and matches the criteria in the folder bio, you are more than welcome to add it to this group.

4993567
If you want to add NSFW fics you need to make the group NSFW.
If the group is NSFW then you can freely link fics that are rated M

4993567
4996228
Even if the group is not marked as (nsfw) you can still add Mature rated stories to the group folders, but you can't directly link to Mature stories in the forums unless the group is marked as (nsfw). Indirect links such as heading to an author's story list are perfectly within site rules, however.

4996358
Ohhhhhhhhhh. Thanks!