Facebook revealed that it has been miscalculating more of its viewership metrics for advertisers in a blog post on Friday.
One miscalculation is a discrepancy between the number of likes and shares Facebook shows for web links through its Graph API for advertisers and mobile search field.
Facebook has also been miscalculating the number of likes and reaction emojis that page owners see for their live videos.
This is the third time Facebook has admitted to misleading advertisers since September, when it was revealed that the social network had been inflating a key video-viewing metric for years.
Neither of the errors Facebook revealed on Friday are as impactful for advertisers as the previously misreported numbers for video views and other products like Instant Articles.
But the discrepancy between the number of likes and shares for web links could affect the accuracy of recent, widely cited investigations by BuzzFeed and The New York Times into how fake news stories are shared on Facebook, according to Marketing Land’s Tim Peterson. Both investigations relied on Facebook’s like and share data to show how fakes news stories can easily go viral on the social network.
Facebook said on Friday that it’s still “looking into” the discrepency. The company recently acquired CrowdTangle, a tool used by media outlets to measure how stories are shared across Facebook and other social networks.
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