'56% [of the ads] were [shown] after the election.' 'Roughly 25% of the ads were never shown to anyone.' So Facebook (Elliot Schrage, Vice President of Policy

'56% [of the ads] were [shown] after the election.' 'Roughly 25% of the ads were never shown to anyone.' So Facebook (Elliot Schrage, Vice President of Policy and Communications) now argues their ad system is not very effective anyway ?! 'Never shown' is not what a client wants to hear...