Originally Posted by Sly

I would skip purchasing ads and focus on direct traffic to individual girl pages or individual sub niche pages. I'm thinking: general SEO, links from sites that feature said girls, blog posts about said girls (for link power more than actual traffic.)

Another route: talk to sites like Free Ones, get ads or links on the individual girl pages which would again focus on the proper model page on your site.

You might be able to do this with various sub niche sites as well.