A Google post describes a decision to stop censoring Chinese search requests. See: A new approach to China: an update.
Nations handle free expression and censorship differently within their legal structures. It shouldn't be a surprise that search engine requests fall into the constraints of the local laws.
I would like to see a website with a matrix of countries and brief descriptions of how they treat free expression and censorship. It would be nice if it also had, by country, descriptions and links to censored websites.
Here is my original SETI research.