Porn users rarely care to really socialize, except when there's something worthwhile and free to download (such as full length clips or better full site rips). And even then most of their "socializing" is a link to download a clip and a few "thx".
Making them to socialize on a network filled with fhgs only will not be easy, but you definitely have some interesting and fresh concept there so maybe there's a chance it'll get off the ground.
Good luck to you anyway, and congrats on the launch
