The logo of Sina Corp's Chinese microblog website Weibo is seen on a screen taken in Beijing in this September 13, 2011 file photo illustration. New real-identity rules to be imposed on China's Weibo are likely to make the country's most popular microblogging platform more alluring to advertisers, as Sina Corp seeks to start generating revenue from its product later this year. REUTERS/Stringer/Files (CHINA - Tags: POLITICS SCIENCE TECHNOLOGY BUSINESS LOGO)
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