Aaron, suggestion: A better incentive would probably be some transparency on the money side of things. Somewhere advertisers can see what they were charged, and when, what they are being refunded and when. When I click to view orders I get a table with figures that bear no resemblance to the actual completed order costs - it's confusing. But, most imortantly, how about a phone number so advertisers can talk to you if they're having problems (instead of pulling their hair out)?