This has probably been posted before, but I thought I'd post it again for those who haven't seen it:
http://asp-cyber.law.harvard.edu/gat...=microsoft.com
That site will allow you to type in your domain and see if Gator is selling advertising on your site, and which specific ads they are selling.
You should also consider adding the following link to your website:
http://www.doxdesk.com/parasite
If the owners of all of the big free adult sites were to put a link to the Dox Desk site, they could reduce the number of surfers who are exposed to parasitic advertising.