Skip to main content

Computer screens display the Facebook sign-in screen.

© Rick Wilking / Reuters

Facebook says it will work with independent companies like Nielsen and comScore to review more of its metrics after it uncovered new problems with the data it provides to advertisers and publishers that use its network.

Facebook had apologized to advertisers in September for errors that led to overstating how long users watched videos.

On Wednesday, the Menlo Park, California, company said in a post that it miscalculated four metrics, including undercounting how many people watched all of a video and overcounting how much time people spent reading "Instant Articles," which loads stories from publishers like The New York Times and Washington Post more quickly on Facebook.

Story continues below advertisement

Facebook and Google together account for the majority of digital ad dollars spent in the U.S.

Report an error
Tickers mentioned in this story
Unchecking box will stop auto data updates
Due to technical reasons, we have temporarily removed commenting from our articles. We hope to have this fixed soon. Thank you for your patience. If you are looking to give feedback on our new site, please send it along to feedback@globeandmail.com. If you want to write a letter to the editor, please forward to letters@globeandmail.com.

Welcome to The Globe and Mail’s comment community. This is a space where subscribers can engage with each other and Globe staff. Non-subscribers can read and sort comments but will not be able to engage with them in any way. Click here to subscribe.

If you would like to write a letter to the editor, please forward it to letters@globeandmail.com. Readers can also interact with The Globe on Facebook and Twitter .

Welcome to The Globe and Mail’s comment community. This is a space where subscribers can engage with each other and Globe staff. Non-subscribers can read and sort comments but will not be able to engage with them in any way. Click here to subscribe.

If you would like to write a letter to the editor, please forward it to letters@globeandmail.com. Readers can also interact with The Globe on Facebook and Twitter .

Welcome to The Globe and Mail’s comment community. This is a space where subscribers can engage with each other and Globe staff.

We aim to create a safe and valuable space for discussion and debate. That means:

  • Treat others as you wish to be treated
  • Criticize ideas, not people
  • Stay on topic
  • Avoid the use of toxic and offensive language
  • Flag bad behaviour

Comments that violate our community guidelines will be removed.

Read our community guidelines here

Discussion loading ...

Cannabis pro newsletter