You are the only "openly porn" site here that I know of
If there are many sites interested I could add "No XXX" option and separate adult sites and normal ones.
Maybe as a test, have a "No XXX" check box as an option, that is defaulted to be checked so there is no one accidentally advertising porn. That way you can see if that is a service people would be interested in at all. I assure you just asking or waiting for people to say they want the service will not happen with porn, I am the few vocal ones, and even I do so half assed.