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 313 million monthly active users and 139 million daily active users; In combination with the critical time nodes for the development of Weibo, let us tentatively divide the growth of Weibo from its birth into three stages, namely; On 9 April 2013, Alibaba Group announced that it would acquire 18 percent of Sina Weibo for $586 million, with an option to buy up to 30 percent in the future. When Sina Weibo went to NASDAQ, Alibaba exercised the option. Now Alibaba owns 32 percent of Sina Weibo. According to iResearch's report on 30 March 2011, Sina Weibo had 56.5% of