Sorry. NSFW post wasn't automatic yesterday (maybe lemmynsfw wasn't in the mood to respond). I tried to do it myself, and made a mess of it. Fixed now though!
Note: some communities that have NSFW posts but the community itself isn't tagged NSFW (e.g. pornstars) don't appear on this list, and I've had to make sure they don't appear on the SFW version too, obviously.
Bot author here: I've been thinking about adding a function that creates a post in the #1 trending community to say "congrats" (and also as a bit of self-promo). It'll only post once per community. Would this be cool / not cool?