I have noticed that a large part of "Browse Art: Popular" is NSFW content, A or M rating.

Of this a considerable part is fanart. Art that satisfies libido, by showing us characters in other situations.

However I have not found so much fanart of adult content; as is the hentai.

This makes me think a couple of reasons why there is no fanart about hentai, which are:

• The artist or creator in question does not want to be exposed. Regardless of the type of content it make; it don't want to reveal the hentai content it consume.
• The hentai is already a product whose content satisfies the public. At least at the visual level it satisfies a mayority, because at the narrative level it does not please everyone.

A viable option (and seemingly under-exploited) is to make SFW fanart from hentai. A true visual irony.

I know it's not a great reflection, but I wanted to capture it.