AdWords eBay
 

Check on some of your keywords (adult oriented).. do you see this under sponsored links:

"Your Keyword"
Whatever you're looking for
you can get it on eBay.
www:eBay:com

This ad is at high CPC for some of my keywords. Why bother advertising at such high CPC for ebay porn. Maybe one of google's planted ads to drive up CPC?

Here's a couple "amateur girl" and "teen slut".

it's an affiliate, and there's reasons to do it that i won't get in to.