My CTR on proxy sucks. around 2 clicks for 500 impressions. I saw that most of ads are displayed of "hit counter" and "dell servers" and these are not those ads where any student using proxy will click.. How can I remove those ads and put ads that are targeted to youngsters?? Thanks..
get a better theme, or spend a month or so changing up positions/units. Try something different once a week and see if it changes anything. If you do decide to change the theme, go with the Adsense Proxy theme at Free Glype Themes Edit-You can also try section targeting. https://www.google.com/adsense/support/bin/answer.py?hl=en&answer=23168