Jul 1, 2014 5:03 AM
CALIFORNIA - There's news about Facebook that's leaving some of people unsettled.
The social media site is under fire for conducting a secret mood test on hundreds of thousands of users.
Facebook, along with researchers at 3 universities, conducted the experiment in early 2012.
They manipulated news feed content to see how users would emotionally react to the posts.
The study found that users that were shown more negative content were slightly more likely to write negative posts.
Users in the positive group responded with more upbeat posts.
Facebook's terms of service gives the company permission to conduct this kind of research.
But many users have reacted with anger at what they say is a dangerous social experiment.
14 minutes ago
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