rmunaval writes "Reporters Without Borders has an article on search-result censorship in China by different companies. The conclusion was made based on six politically sensitive keywords. A search on yahoo.cn resulted in 97% pro-Beijing results compared to 83% on google.cn and 78% on msn.cn." From the article: "[Yahoo!] is therefore censoring more than its Chinese competitor Baidu. Above all, the organisation was able to show that requests using certain terms, such as 6-4 (4 June, date of the Tiananmen Square massacre), or 'Tibet independence', temporarily blocked the search tool. If you type in one of these terms on the search tool, first you receive an error message. If you then go back to make a new request, even with a neutral key word, yahoo.cn refuses to respond."