Advertisers allege in suit that Facebook didn't disclose key video metric error for over a year and that scale of miscalculation was far worse than understood (Suzanne Vranica/Wall Street Journal)

Suzanne Vranica / Wall Street Journal:
Advertisers allege in suit that Facebook didn’t disclose key video metric error for over a year and that scale of miscalculation was far worse than understood  —  Facebook knew of problems with how it measured viewership of video ads for more than a year before it revealed them in 2016, according to a complaint filed by advertisers.





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