[vc_row][vc_column][vc_column_text]A software developer in Denmark has created a way to track the sleep patterns of his Facebook friends using only the activity data available on the social network. The tool, developed by Søren Louv-Jansen, is based on the activity timestamps that Facebook … http://techdistrict.net/featured/how-to-use-facebook-to-track-your-friends-sleep/

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