Tommy you have more traffic them just about any of us. I'm surprised that you haven't started adding in links to other things. At least sex toys or something like that.
What I did was add new site types to my link list.
Like on this page.
http://cleos-porn-links.com/adult-links/new.shtml
So far I have
Free
Pay
Free Trial
Directory
Merchandise
Pay Per View
$1 Trial
Cellular
I don't really like "Cellular" but can't think of a better name that is short for ringtones, screen savers, games and other cell phone stuff.
Right now I'm just mixing them in with my other listings but if I get enough goods to sell I may do a Merchandise category page or something. Also it would be easy for me to pull listings from this database to a mainstream list or something on another domain.