Ouch, I see it now:

https://www.google.com/adsense/support/bin/answer.py?answer=...

"May not compensate users for viewing ads or performing searches, or promise compensation to a third party for such behavior"

I guess this is why there are other sites that use Yahoo as the search engine for the same purpose... Thanks for the heads up, I'll let you know if I find some way around it. I think I'll leave it up and wait until Google contacts me before switching to Yahoo.

Who knows, maybe I'll write something that allows verification of donations for charities. That might be a good non-profit in itself.