Are they not free to Share Thoughts

The news that Microsoft shut down a Chinese blogger's site at the request of Beijing

officials is bringing a renewed focus on the role U.S. companies play in helping China control the Internet. The Chinese government, determined to prevent dissidents from using the Net to promote taboo subjects such as the Falun Gong religious movement, formal independence for Taiwan, or an end to Communist Party rule,

So check the Chinese rules and control the content that's available for local Net surfers.