Don’t worry, be happy. And according to a study of more than 100 million anonymous U.S. Facebook users and more than 1 billion of their posts — conducted by Facebook and researchers at the University of California San Diego and Yale University — your happiness might spread to your Facebook friends.
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How does Facebook affect elections? According to a new study led by the University of California, San Diego, a single post on Election Day 2010, Nov. 2 of that year, drove some 340,000 users of the social network to their polling stations.