while i am doing really quick blogposts... i have heard of static advertising captchas before, but why hasn't anyone done dynamic captcha ads...
1. get advertisers to upload their ads and then a statement like 'this ad is for a car company'
2. make a captcha that is two advertisements and prompt 'which of these ads is for a car company'
thereby, actually force the users to engage with the brand/message in the context of verifying their humanness -- == premium ad dollars? how is it possible that no one has done it/i haven't seen it yet?