because facebook meticulously tracks and categorizes us (the ontology), it’s possible to extricate personal data from facebook based simply on the ads you’re se

because facebook meticulously tracks and categorizes us (the ontology), it’s possible to extricate personal data from facebook based simply on the ads you’re served. so fb still leaks data about you (to advertisers, researchers, governments, etc.) even if they don’t literally let people download the personal data. then there’s also the issue that the government can compel arbitrary disclosures secretly and without recourse.