Ah, I see. For me, the privacy-breaking aspects that are required to personalize ads are the primary negative aspect, and are what I focused on. While the par

Ah, I see. For me, the privacy-breaking aspects that are required to personalize ads are the primary negative aspect, and are what I focused on. While the parent comment only explicitly mentioned personalization of ads, tracking by ad companies for the sake of ad personalization is so ubiquitous that unless one explicitly makes a distinction, it is reasonable to take a reference to one as a reference to the other. Reading through those links on FLoC and TURTLE-DOV, those are interesting concepts. My worry is that even though the ad selection is done in the browser, it will still leak significant information. For image/video ads, it would require bloating the amount of bandwidth used to serve the ads, or would leak information about which ad was selected by the client.