there is an example of one ad: "Check Out This New Blog Dedicated To Bringing You Hot Girls. Go Now! Hot-Girls-Girls-Girls-DOT-Blogspot-DOT-Com" then we go to this 'blog'. and what we see? photos+adsense ads. I saw plenty of such 'ads' this week.
Report the advertiser. Contact google and include the text of the ad copy that appears on your site, and then indicate what the site is that it goes to. You can do this for MFA arbitrage and for arbitrage using other networks. Google does react to it