Facebook's not alone: Twitter admits to overcharging advertisers

On the heels of several embarrassing metric error disclosures from Facebook, Twitter is taking its own shot at the advertiser apology routine.

The social network admitted to a bug in the most recent update to its Android app that caused it to overcharge advertisers throughout much of the past month.

Twitter apparently divulged the issue to advertisers earlier this week but only fessed up publicly after Business Insider broke the story late Thursday.

According to Business Insider's source, the mistake inflated video campaign metrics by as much as 35 percent, and Twitter has already offered refunds.

A company spokesperson confirmed the error in a statement sent to Mashable.

"We recently discovered a technical error due to a Twitter product update to Android clients that affected some video ad campaigns from November 7 to December 12," the spokesperson said. "Once we discovered the issue, we resolved it and communicated the impact to affected partners. Given this was a technical error, not a policy or definition issue, we are confident it has been resolved."

The mishap comes as Twitter has struggled to grow its advertising business while advertisers grow disenchanted with its sluggish user base gains.

The company has also faced a slew of executive departures this year -- most recently, Chief Technology Officer Adam Messinger, who announced his resignation on Tuesday.

Twitter is of course not the only company to come forward about errors regarding the way it measures advertising interactions. Facebook has made three such announcements this fall, spanning more than a dozen metrics.