I always feel weird favoriting porn or nude pictures. Mostly because I don't favorite it because of that, I just like the picture regardless of the genitalia exposure or not. It bears no correlation to what I find "exciting", though I don't usually find much furry art arousing anyway. But it still makes me feel weird, like I'm saying "Yeah, I find this hot" when I really don't.

Also stories, I don't usually favorite them because I found them arousing; I do because they've been well-written in general and I enjoyed reading them. (Actually in my experience writing tends to fall apart a lot more in porn than not-porn because writing with the explicit purpose of arousal towards some fetish generally requires you to ignore a lot of common sense and have to cut out a lot of decent stuff.)

I'm not saying that people shouldn't put in sex or nudity or whatever. I don't really care, you can do what you like. But I think it does complicate things for some people if you include it.

Then again this is FA where making it porn may make it up to an order of magnitude more palatable, and a bunch of artists get money off of making masturbation material for others, so... yeah.