Piotr Sapiezynski (@sapiezynski.bsky.social)

Pretty blown away by this paper from Piotr Sapiezynski and team at Northeastern and Princeton, presented at #CSCW2024: dl.acm.org/doi/10.1145/... For lots of good legal and moral reasons, Facebook doesn't allow advertisers to explicitly target ads to "White Republicans" or "Black Democrats"..

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On the Use of Proxies in Political Ad Targeting | Proceedings of the ACM on Human-Computer Interaction Detailed targeting of advertisements has long been one of the core offerings of online platforms. Unfortunately, malicious advertisers have frequently abused such targeting features, with results that... https://dl.acm.org/doi/10.1145/3686917