i just search around proxy, and normally lot people arguing about Google allow proxy or not as Google say , allow adsense in mainpage but not in proxied page i have see this page http://math.info/ he set all his site description relate to (loan, finance) so the adsense publisher is between range finance. As we can know finance Click = 1 usd or more per click it target high pay word interm of proxy keyword. will Google ban this?
Your content has to be relevant to your site. If you read it the first couple sentences are but then he strays off into finance. If they catch it the site could get banned. It is not allowed last I checked.
so content must relate to website? the site all publisher ad is major finance , lesser proxy ad. if google don block, just imaging proxy can earn good click money