Tencent Weibo Tencent Weibo Tencent Weibo is a Chinese microblogging (weibo) website launched by Tencent in April 2010, and is still currently under beta testing. Users may broadcast a message including 140 Chinese characters at most through the web, SMS or smartphone. Tencent Weibo is a social network that connects all users together. It enhances communication between friends. Users can share photos, videos and text with a 140-character limit. The reposting function of Tencent Weibo is similar to Twitter's "retweeting", which is replied in @ form. In comparison, Tencent Weibo encourages users to create new topics on their own. With the support
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.