I tried it and you have no control over the cost per click. It charged me something like $.13 cent per click on the search term mature women. It wasn't worth it.
Sex.com I don't get a good turn around from them. You get lots of hits but the conversions are bad. Not worth it.
Overture They cost too much! Too many people fighting over the top spot. But, when you get a keyword that is undercontrol the hit convet like crazy.
You just have to try and see what works for you.
