Editorial: Facebook experiment went too far

A sign at Facebook headquarters in Menlo Park,

A sign at Facebook headquarters in Menlo Park, Calif. on July 16, 2013. (Credit: AP)

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That's the number of Facebook users who had their newsfeeds manipulated by the site as part of a 2012 research study to determine whether emotions spread online.

The results showed a direct correlation between the negative and positive emotions users were fed on the social network and the emotions they then expressed. While Facebook's policy says user information may be used for research, playing with people's emotions without explicit consent is a social experiment that went a step too far.

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