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The idea of people gathering their own health data online was brought sharply into focus once more with the news that Facebook was able to measure the happiness of users in the lead up to St Valentine’s Day. A blog on the leading social media network tells how the data team studied people’s...

For many people it's the place to parade a new persona. But according to the latest research from psychologist Sam Gosling at The University of Texas at Austin, social networks such as Facebook are being used to express real personality, instead of an virtual identity . "I was surprised by the...