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The Renren Network, formerly known as the Xiaonei Network, was a Chinese social networking service similar to Facebook. It was popular among college students. Renren Inc. had its headquarters in Chaoyang District, Beijing, with additional offices in Shanghai and Guangzhou. Renren at one point had a $740m initial public offering (IPO) on the New York Stock Exchange in April 2011.
来源:维基百科