I'm thinking about launching a small bikini/softcore sort of website with maybe some celebrity pics, hooters girls, and such with the intention of making money off PPC ads. Absolutely no nudity or even partial nudity. The challenge, as I see it, is that guys checking out these pictures will be hard to convert to ad clicks because they want to keep viewing the pictures, right? So, the choice of an ad partner is challenging. I really prefer AdSense because they are the best, but I don't know what body text would serve up ads that anyone would want to click on, if any. All I can think of is maybe AdSense would serve up dating ads? I've seen those shaded-picture ads with "girls in (town name)" that lists a geolocate of your local town, but I don't know how reputable those ads people are. Anyway, does anyone have any experience with making money off websites like these? Any suggestions for PPC advertising?
I run a similar site to what you are talking about. The ads that I get are 'online dating', 'singles' etc. The CTR is pretty good, you just gotta get the traffic. As for the 'Meet girls in your town' ads, with the geo-targeting. AFF runs a program like that, and they are definitely reliable payers.
I don't recommend pop unders. You can find advertisers who are willing to pay for impressions. (Hi5.com people do that). I think people who own such sites does not earn from ads. They have many other ways. Aren’t they?
Corwin, as suggested above, if you are looking for actual pay-per-click traffic, you can try AdBrite.com. I've used it before, and traffic purchased yielded good results for one of the sites. The best thing about it is that you can select the sites you want your ad to be displayed on for better results.