https://www.propublica.org/article/f...ows-about-them
Quote:
Facebook?s page explaining ?what influences the ads you see? says the company gets the information about its users ?from a few different sources.?
What the page doesn?t say is that those sources include detailed dossiers obtained from commercial data brokers about users? offline lives. Nor does Facebook show users any of the often remarkably detailed information it gets from those brokers.
?They are not being honest,? said Jeffrey Chester, executive director of the Center for Digital Democracy. ?Facebook is bundling a dozen different data companies to target an individual customer, and an individual should have access to that bundle as well.?
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Ever see all those Facebook, Twitter and Google+ buttons on websites ...