Sina Weibo the domestic microblogging services including the first weibo service Fanfou. Many popular non-China-based microblogging services like Twitter, Facebook, and Plurk have been blocked from viewing since then. Sina's CEO Charles Chao considered this to be an opportunity. SINA Corporation launched the tested version of Sina Weibo on 14 August 2009. Basic functions including message, private message, comment and re-post were made possible in September 2009. A Sina Weibo–compatible API platform for developing third-party applications was launched on 28 July 2010. On 1 December 2010, the website experienced an outage, which administrators later said was due to the increasing numbers of
Sina Weibo monthly active users; 85% of them use Weibo on their mobile; there are over 100 million messages posted by users each day; 70% of Weibo's active users are at university level; 50.10% of Weibo users are male, 49.90% are female; with 90 million followers, actress Xie Na is the number 1 Weibo celebrity. Although the competition in China social media platforms is very fierce, Sina Weibo still comes out and becomes the most popular one. The wider use of mobile technologies in China also increases the popularity of it. After the July 2009 Ürümqi riots, China shut down most of