The experience 
@Violinknitter describes here is deeply familiar to me: advertisers keep shoving in front of me ads in which I have •negative• interest.
Does the massive adtech surveillance apparatus actually work on someone out there? Because it’s sure failing to target me. https://wandering.shop/@Violinknitter/115624133826239199
@inthehandsPaul Cantrell @Violinknitter I worked for one of the email coupon companies with delusions of grandeur many years back.
For unimportant reasons, we failed to personalize the coupons in our campaigns for a few weeks, falling back to a random selection to each recipient. After we fixed the integration bug, we treated it as a natural experiment of the efficacy of our personalization ml algorithm.
It was negative. Definitively. Random selection handily outperformed all the expensive personalization.
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