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Re:Why I Work on Ads by jefftk on Thursday May 06, 2021 @04:46PM (#27068854)
> unless you go to a lot of trouble, you're essentially relying on the ad network's own metrics for efficacy

There's a whole ecosystem of "buyside verification vendors" that advertisers contract with to validate that they're getting what they paid for. Buyers don't just take the seller's word for it, or at least enough of them don't that shady sellers are kept in check.

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