welcome!!!
An interesting dillemma...although if all you'll end up doing is parking the domain, why not create a site that uses free sponsor content, but has lots of PPC around as well?
That way you can build a bookmark base and be getting more than just the accidental surfers arriving at your domain more people looking at the PPC ads more money for you! :P
PPC Adult Programs:
Adult Ad World - These convert great for me, and also feature CPM adverts which is a bonus!
AVN Ads - I've not had much success with these AT ALL but some people swear by them. I still havn't figured the secret out yet I think....
Click Thru Cash - Awesome but Teen only at the minute