A spokesman for Sina Corporation (“Sina”) said on March 12, 2012 that 60% of its users of Weibo, which is the popular Chinese version of Twitter, will have registered their real identities by March 16th in compliance with the "Regulations on the Administration of Development of Weibo in Beijing" (the “Weibo Rules”).  The Weibo Rules, issued by the Beijing Municipal Government Press Office together with other relevant authorities on December 16, 2011, require that any organization or individual who publishes a Weibo should register their identity with the Weibo service provider. After March 16th, any Weibo users that has failed to register will be unable to continure publishing information through Weibo.