with regards to erotic fanfiction, Sturgeon's Law was never more apparent then with erotic fanfiction and erotic webfiction in general. Erotic fiction is really really easy to do horribly wrong.
True. I prefer my erotic fanfic with a side of romance, myself. As for the rest, meh. I don't like professional porn stars. Too much makeup, too much "exactly like everyone else" and too little uniqueness. Only professional porn I like is (and I'm sure everyone will be really surprised by this /sarcasm) Suicide Girls. Other than that, amateur stuff is so much better. Actual people, who aren't made of plastic. I'd say that's much more fantastic.