From BBC News:
Amnesty International is urging UK users of Yahoo, Microsoft and Google to e-mail the companies asking them to change the way they operate in China.
The human rights organisation says the companies are aiding internet censorship in the Communist state. And it is asking them to reveal which words they have banned from blogs or web searches in China.
The internet companies say they are helping the people of China by making information more freely available. But Amnesty says they are helping to reinforce censorship by the Chinese government.[Full Text]
See also Taipei Times’ “US gearing up to tackle Web censorship“; Times Online’s “Gates defends China’s internet restrictions“; BBC’s “Inside the great firewall of China” and Empirical Analysis of Internet Filtering in China by Harvard Law School’s Berkman Center