What experiments over Facebook puts its users

June 17 in the journal Proceedings of the National Academy of Sciences was published an article entitled "Experimental evidence of infection a lot of emotions through social networks ».

The essence of the study is the selective removal of entries from the news feed of users Facebook. For the experiment were selected by 689,000 people, half of whom were hiding in the news negatively stained messages, and the other half, on the contrary, positive.

A team of researchers noticed that, delete messages, they are able to manipulate the emotions experienced by the person viewing the similarly filtered news feed. So, those who have in the news after filtration removes positive messages in turn themselves wrote negatively painted posts and status, and those who have deleted the negative posts, reacted in the opposite way.

It is noted that the experiment did not affect the display of the wall on the pages of friends or private messages.

When registering in Facebook, you accept the terms of the agreement, in which, inter alia, to provide your consent to the "internal operations, including troubleshooting, data analysis, testing, research and service improvement." Therefore, theoretically, Facebook reserves the right in its sole discretion to manage the contents of each user's news feed. You think such experiments are correct?
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Source: habrahabr.ru/post/228039/