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 to make their posts appear in one's own timeline, re-post with "//@UserName" similar to Twitter's retweet function "RT @UserName", select posts for one's favorites list, and verify the account if the user is a celebrity. URLs are automatically shortened using the domain name t.cn like Twitter's t.co. Official and third-party applications make users able to access Sina Weibo from other websites or platforms. In January 2016, Sina Weibo decided to remove the 140-character limit for any original posts, and the users were thereby allowed to post with up to 2000 characters, while the 140-character limit was still applicable to re-posts