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Facebook tweaked news feeds of 1.9 million users before 2012 US elections

Facebook tweaked news feeds of 1.9 million users before 2012 US elections

Social network site Facebook reportedly made slight changes to the news feeds of 1.9 million users prior to the 2012 US election to enable them to see more "hard news" shared by friends.

Facebook adds video ads to News Feed

Facebook on Wednesday began serving up video ads that pop up and play when users check their news feeds.