I use ff.net primarily, since I get one or two reviews and then deafening silence everywhere else. I seem to suffer from romance-option-disorder, and my favourite couples are always on the very fringe of the various fandoms I'm active in (my most popular story on ff.net is Meg/Hades. Go figure.).

So I don't really think that my stuff would be read much anywhere else. At ff.net I have my six reviews per chapter at least.

There is, of course, adultfanfiction.net, but they were such absolute rude, condescending dicks about a forgotten disclaimer that I yanked all my stuff - only to discover that there was no way I could delete my account. I never went back, not even to read.