It seems to me that Google is being quite hypocritical.. They do not allow their users to have ads on proxified pages because the content is not owned by the proxy site owner, and thusly could lead to users clicking on ads not because of the merit of the site/content owned by the actual ad publisher. Well, Google recently released new "Video Ad Units" for Adsense publishers to use on their sites. And guess what... these videos have ads on them that are not from the content of the publisher! I just would like to be allowed to put Google ads on my proxified pages for a much better CTR and I think it is quite silly that Google would make a hypocrite out of themselves with this new video ad program. Rant finished
Well, I don't think they'll ever do it. If they do, then they'll be breaking their own terms. It's just them losing out on more potential advertisers - and allowing the other ad companies to flourish. A lot of proxy site owners tend to use ad brite or other ad companies for framed pages, but maybe; adsense should allow it.