There are a lot of weird toon/hentai microniches...
Like Furries... some of my stuff seems to be popular with that crowd, I don't really have an affiliate system because my site has a small pricetag, but I could set one up, or sell you some content...
The japanese have lots... like girls covered in gold, naked tennis, someone posted a list on a forum I participate in, I could look it up...
-Hk