
It’s interesting to note how critical search is to the process of censorship in China and other countries. From the WSJ article:
The research project by the three universities, known as the OpenNet
Initiative, routed requests through computers in China to Google, Yahoo
and Chinese search engines Baidu.com, in which Google Inc. is an
investor, and Yisou.com, which is owned by Yahoo Inc. Searches with
sensitive terms like “Falun,” for the Falun Gong spiritual movement that
is banned in China, or “Free Tibet” were routinely cut off, without
sending back an error message, the report says.