Microblogging in China experimenting with ways of interaction and negotiation with the microblogging public and service providers in their attempt to improve social management and political legitimacy. This negotiation process also exposes and/or creates inter-governmental tensions, since local governments in China consist of distinct units with their own particular preferences and operation procedures. Since 2011, there have been rumors that the government will institute a "Real Name" policy for Weibo users. Early in February 2012, China's four key weibo companies – Sina, Sohu, NetEase and Tencent – announced that March 16, 2012, was the deadline for users to adopt their real name identity.
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