Most proxy sites I've seen are running adsense. The issue I have is the lack of content those pages actually have. Most proxy home pages have at best 2 - 3 lines of text. Surely such little content would causes flags to be raised on your account by Google?
I've been spending the last few days looking into proxies, and I'm on the verge of hosting my first one. But I'm kinda wary of slapping adsense all over the sites, the last thing I want is to get banned. I fully understand you can't display adsense on the proxified pages, I'm just talking about the home page of the proxy.
I just need some reassuring.