> if I look up the specs on a pair of Bose QC-35's, I won't get internet-stalked with ads for that specific pair of headphones for the next 3 weeks whenever I p

> if I look up the specs on a pair of Bose QC-35's, I won't get internet-stalked with ads for that specific pair of headphones for the next 3 weeks whenever I pull up a weather report The WSJ seems to be describing https://github.com/WICG/floc https://github.com/WICG/floc, but the kind of remarketing you're describing is what https://github.com/WICG/turtledove https://github.com/WICG/turtledove is intended to support. Advertisers would still be able to run that kind of personalized ad, but the browser API would not allow them to learn your browsing history in the process. (Disclosure: I work on ads and Google, speaking only for myself)