BA, Computer Science, Brown University; MSc, Sociable Media, MIT Media Lab; PhD, School of Information, University of California, Berkeley. Formerly, ethnographer and social media researcher, Intel, Tribe.net, Google and Yahoo. Research focus: the role of social media in society (with an emphasis on youth practices). Currently: Principal Researcher, Microsoft Research; Research Assistant Professor, New York University; Fellow, Harvard Berkman Center for Internet & Society; Founder, Data & Society Research Institute; Director, Crisis Text Line. Frequent public speaker and blogger.