Facebook is to lose some of its advertisers after a Facebook ad bug incorrectly counted internal clicks on its video carousel as external clicks through to users ' own sites . The impact in terms of billing was just 1 % of ad impressions , with the bug affecting only mobile web browsers , according to the company . The incident was the latest in a series of ad metric problems at Facebook , which led to the social media company agreeing to an independent audit of its ad data by the Advertising Rating Council in February .
Facebook is to refund some of its advertisers after a video ad bug incorrectly counted ad clicks on its video carousel as external clicks through to advertisers' own sites. The impact in terms of billing was just 0.04% of ad impressions, with the bug affecting only mobile web browsers, according to the company. The incident was the latest in a series of ad metric problems at Facebook, which led to the social media giant agreeing to an independent audit of its ad data by the Media Rating Council in February.