76
      Wednesday
      94 / 75
      Thursday
      93 / 73
      Friday
      90 / 75

      Facebook researchers apologize for manipulating news feeds for a study in 2012

      (WJLA) - Facebook is under fire for a secret study on emotions.

      Researchers manipulated the news feeds of about 700,000 users to see how certain words affected their mood.

      The study took place in 2012. It was within Facebook's terms of service, according to Facebook rules, but users are questioning if it was ethical.