This picture taken on April 16, 2014 shows a man using a laptop at an office of Sina Weibo, widely known as China's version of Twitter, in Beijing.  China plans to severely curtail major Internet portal Sina's right to publish online after it 'spread pornographic information', authorities said on April 25, in the latest official move to tighten online control.        AFP PHOTO / WANG ZHAO        (Photo credit should read WANG ZHAO/AFP/Getty Images)