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.
Sina Weibo Attempts to register accounts with usernames alluding to Ai Weiwei were blocked. On 30 March 2010, Hong Kong singer Gigi Leung blogged about the jailed Zhao Lianhai, an activist and father to a 2008 Chinese milk scandal victim. The post was later deleted by an administrator. However compared to other Chinese media formats, Weibo services are seen as allowing greater freedom of speech. Criticism against the Chinese government is more widespread on Sina Weibo and other weibo services. After the July 2011 Wenzhou train collision, many dissatisfied posts concerning governmental corruption were posted throughout the Sina Weibo. While Weibo services