Sina Weibo and companies. Also, there is a graph and a declaration on its user page to show the verification. There are several kinds of verifications: personal verification, college verification, organization verification, verification for official accounts (accounts of government departments, social media platforms and famous companies) weibo master (people bind the accounts with their phone numbers and their followers). When the number of microblogs reaches a threshold, users can apply for the verification of "Weibo Master". Sina produced mobile applications for various platforms to access Sina Weibo, the platforms include Android, BlackBerry OS, iOS, Symbian S60, Windows Mobile and Windows Phone. Sina
Sina Weibo new "close friend" function enhanced the private social circle; In February 2013, the company reported total revenue of about 66 million us dollars, with more than 500 million registered users and 46.2 million daily active users; In April 2013, Alibaba acquired an 18% stake in Sina Weibo; In August 2013, Sina Weibo Taobao was launched to realize account sharing; In March 2014, sina weibo was renamed "weibo"; In April 2014, weibo was listed on Nasdaq; In November 2016, the 140-character limit for the release of the publisher was limited to less than 2,000 words; In December 2016, Sina Weibo posted