Adbrite and Penis Enlargement

Hi,
I am new here, and not trying to be funny. Penis Enlargement, for instance, is a niche, it’s not often many people are gonna search for it. So what’s stopping one from bidding on ‘penis enlargement device’ or such keyword, which actually gives the surfer a concrete idea that only those looking for penis enlargement device should click on it, and enter the site. Don’t you think this will prevent curiosity clicks, and only potential customers will come to our site?
I’d appreciate some response on this, as also how adbrite works. Is it similar to adwords?
Warmly,
C

Original post by confounded