FWIW, this is exactly what we do at EthicalAds. You can read a bit more about it here: https://www.ethicalads.io/advertising-vision/#how-our-ads-wo... -- but we should really have a better page explaining how we're doing content-based targeting. Our advertiser find it works really well, and our publishers enjoy having tasteful, reverent ads on their sites.

I'd be interested in seeing personalized ads but there is no such thing. I recently had a look at what ad categories Google applies to me and honestly.. it is so wide that it is does not feel personal in the slightest, and indeed it's wide & vague and nonspecific enough that "employed male, about 30, western" would be a sufficient description. Indeed, I feel like that just filters for the ads they'd blast on broadcast media all day long anyway.

Advertisers don't really understand who I am or what I want, and Youtube history isn't a good substitute. If anything it's circular, because Youtube also keeps recommending the same shit based on viewing history..