That's an interesting article Pain - about the difficulties auditing Facebook content rather than about censoring it.
Alex Howard, deputy director of the Sunlight Foundation, which advocates for government transparency, said highly targeted online ads can be “weaponized against liberal democracies” because they do not meet the same levels of disclosure and visibility as traditional radio, TV, and print ads.
“It removes our ability to have transparency into who is trying to influence our politics, and any accountability for that influence,” Howard said. “And it takes away from the capacity of the traditional organs of democracy — that being the press and regulators and other institutions — to figure out who is behind political messaging, particularly at crucial times.”
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Of particular focus for critics and congressional investigators is the use of so-called dark post ads by Russian trolls, as well as by campaigns, PACs, and other entities, to target specific Americans by geography, interest, and other data points.
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Dark post ads — which Facebook calls “Unpublished Page post ads” — appear in a person's News Feed like any other ad, but are only visible to those being targeted. There is no way to identify the dark post ads being run by a particular page or account on Facebook. That means academics who have spent decades tracking and analyzing political ads, as well as fact checkers who try to keep campaigns and PACs honest, might never see the messages being fed to voters.