(The Today Show) News that Facebook manipulated users' news feeds to see if it made them feel blue now has some users seeing red.
Facebook is seeing backlash after participating in a study that involved the social media giant manipulating content seen by more than 600,000 users for a psychology experiment.
In January 2012, Facebook tweaked news feeds to show statuses that were particularly positive or negative and found that the emotions of others can affect your mood. The findings were published in the Proceedings of the National Academy of Sciences in an article called "Experimental evidence of massive-scale emotional contagion through social networks."
Researchers did not inform users that the manipulation of the news feeds would be taking place, however, Facebook's action is legal due to terms laid out in the user agreement when a person signs up for the site.
Read More: http://on.today.com/1voaypz
Copyright KOBI-TV. All rights reserved unless otherwise stated. This material may not be published, broadcast, rewritten, or redistributed without written permission.