This is amusing. When I go to my Private Messages page, I get google ads for a private school for troubled teens, a private villa in Costa del Sol, another private school for children with learning difficulties, and a villa in Taormina with a private swimming pool.
While writing this post the page bottom has four Google ads - three of which were film-related (including one for "school photo supplies" that was for film and paper and two for buying film on-line). The only "odd ball" was for B&W copiers - which is not an unreasonable "hit".
The Google ads in the classifieds section also seem not to be appropriate--mostly ads for other classified ad venues. Maybe that's another spot where they could be eliminated.
Sean, I just noticed that unlike all other off-site links, the links in google ads do not target a separate browser window and obliterate APUG when I click on them. Should they be behaving this way?