Once again, Facebook is embroiled in a controversy over privacy. This time, hackles have been raised by publication of a study for which the company manipulated the News Feeds of nearly 700,000 subscribers. The study concluded that, yes, negative messages on social networks make people sad, and positive ones make them happy -- and those feelings can spread through a social network to third parties. Led by Adam Kramer of Facebook's Core Data Science team, the study was published in PNAS.from TechNewsWorld http://ift.tt/1iOvRRa
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