Tencent Weibo in March, Qoocu.com (a blog focusing on products of Tencent) released some screenshots of the internal beta test of Tencent Weibo. On April 1, Tencent began its public beta test, people with an invitation code might take part in the test. And on the same day, Tencent released its QQ2010 version Beta3, with the microblogging feature included. In the second quarter of 2012 it had 469 million registered users. On July 23, 2014, Tencent Inc announced that it will integrate its micro-blogging service's operation team into the company's news team, after media reported that it has dismissed its micro-blogging department
Sina Weibo Sina Weibo. Posts on politically sensitive topics are deleted after manual checking. Sina Weibo is believed to employ a distributed, heterogeneous strategy for censorship that has a great amount of defense-in-depth, which ranges from keyword list filtering to individual user monitoring. Nearly 30% of the total deletion events occur within 5–30 minutes, and nearly 90% of the deletions happen within the first 24 hours. On 9 March 2010, the posts by Chinese artist and activist Ai Weiwei at Sina Weibo to appeal for information on 2008 Sichuan earthquake going public were deleted and his account was closed by website's administrator.