World Leaders Gather For Nuclear Security Summit 2014
Question-and-answer service Quora has begun rolling out verified profiles for public figures, with President Barack Obama signing up as the first user to receive a blue checkmark. Obama has taken to Quora to answer questions about the Affordable Care Act ahead of the March 31 enrollment deadline. On-boarding the president of the US has become something of a milestone for social services. Reddit, for instance, reached a turning point in 2012 when Obama participated in an AMA on the site. Alex Wu, Quora’s Head of Product Marketing and Partnerships, told TNW that Obama’s participation is a “great signal of [Quora’s] growth…

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