Just checked:
For some reason online porn doesn’t seem to be a keyword. There’s not the offline/online disparity that you have with casinos. People just seem to search for different varieties of porn such as “free” “pics” “video” etc. The fact that it’s online probably doesn’t matter.
Anyways you’re probably better off discussing this at namepros or sitepoint. I still think this has potential. :wink-wink