My conversation with Liu inspired a systematic study of how blog-hosting companies serving mainland China censor their users' content. All Chinese blog-hosting companies are required by government regulators to censor their users' content in order to keep their business licenses. But as Liu discovered, they all make different choices not only about how to implement censorship requirements, but also how to treat the users who get censored.

The attached presentation is quite interesting.

RConversation: Studying Chinese blog censorship