Sina Weibo China's microblogging market based on active users and 86.6% based on browsing time over competitors such as Tencent Weibo and Baidu's services. The top 100 users had over 485 million followers combined. Furthermore, Sina said that more than 5,000 companies and 2,700 media organizations in China use Sina Weibo. The site is maintained by a growing microblogging department of 200 employees responsible for technology, design, operations, and marketing. Sina executives invited and persuaded many Chinese celebrities to join the platform. The users of Sina Weibo include Asian celebrities, movie stars, singers, famous business and media figures, athletes, scholars, artists, organizations,
Microblogging in China is that much more information can be conveyed in 140 Chinese characters than the 140 Latin alphabet characters used on Twitter for many languages. Sina Weibo is the most visited such site in China. Sina has used the domain name weibo.com for the service since April 2011. Because of the site's popularity and domain name, "Weibo" is often used generically to refer to Sina Weibo or Tencent Weibo. Weibos are a major source of commentary on a wide range of topics. After the high-speed Wenzhou train collision in 2011 in which 40 people died, online posting played a key role