«Whether it's the political ads or problems with ad metrics or how to tell what users care about, we're seeing the consequences playing out.» (adage.com)
While Facebook's ability to track users on multiple devices (and Instagram) is extremely valuable for brands trying to target the right user on the right device at the right time, Facebook admitted in November that it had miscalculated and inflated ad metrics. (businessoffashion.com)
December 22: Business Insider reports that Twitter inadvertently inflated video ad metrics. (cjr.org)