Facebook overestimates video viewing figures to advertisers' anger

Advertisers are unhappy with Facebook as the social network significantly overstated the average viewing time for its video advertisements, according to the Wall Street Journal.
In some cases, statistics for viewing figures were inflated by as much as 80%.
The error by the Facebook metric centred around its average viewing time figures, which did not include those who viewed the ad for three seconds or less. This process allowed the network to boast considerably higher statistics, in the process misleading advertisers about the number of people their product was reaching.