这项测试表明（这些搜索引擎）在过滤水平上存在的显著差异。其中Yahoo.cn的过滤结果同baidu.cn一样严格，而google.cn与msn.cn的测试版容许更多未经中国官方许可的信息通过。
尽管微软公司刚刚表明它并未进行过滤行为，但是记者无国界组织发现其中文版的搜索引擎显示的结果同承认进行了网页内容过滤的google.cn类似。
使用“颠覆性”关键词汇进行的搜索发显示，在google.cn上平均显示83％的亲北京网站，而msn.cn显示78％。相比之下，在对未经过滤的搜索引擎，如google.com,进行的测试却只显示出 28％的亲北京信息。可是，微软公司象古狗一样似乎不是通过过滤内容对特定的词汇进行阻隔，而是拒绝搜索官方认为非法的网站地址。
这个新闻自由组织对yahoo.cn的过滤程度特别震惊。首先，其对“颠覆性”关键词汇的搜索结果显示97％是亲北京的。因此，甚至比其中国竞争者百度更加严格。不仅如此，这个组织发现，使用一些特定的词汇，如6－4（天安门64大屠杀的日期），或者“西藏独立”搜索时，都会暂时性的阻止了这些搜索工具使用。如果你在搜索工具中输入这些词汇，首先你会得到一个错误信息。如果你这时候再回头进行一项新的搜索请求，即使使用中性词汇，yahoo.cn都会停止响应。它至少要一个小时后才会恢复提供服务。这种过滤方式未被任何一个外国搜索引擎使用，只有百度也是使用了同样的技术。
记者无国界组织呼吁在专制国家运行搜索引擎的公司拒绝对所谓“受保护性”的内容，如人权与民主信息，进行过滤。该组织强调：“我们相信即使不背叛其道德原则，这些公司仍然能进入中国市场。可是，他们必须在同中国官方关系问题上采取坚定与清晰的立场。”
词汇
记者无国界组织使用了以下这些“颠覆性”词汇：“6－4” （天安门64大屠杀的日期），“法轮功”，“西藏独立”，“民主”，“人权”和“新闻自由”。每个搜索引擎的前10项搜索结果经过分析后，被划分为“合法”信息来源与“非法”信息来源显示如下。
对“言论自由”在中国的搜索结果，前十个结果：
Google.com: 7个“非法”，3个“合法”网址（共七千二百万项结果）
Google.cn: 5个“非法”，3个“合法”（共五千二百万项结果）
Msn.cn (Beta): 3个“非法”，7个“合法”（八十万项结果）
Yahoo.cn: 1个“非法”，9个“合法”（二十四万项结果）
Baidu.cn: 3个“非法”，7个“合法”（共四十五万项结果）
记者无国界组织进行的全部的测试结果如下：
http://www.rsf.org/IMG/xls/060614chine_moteurs_GB.xls
记者无国界授权六四天网翻译，请以记者无国界英文版本为准。
http://www.rsf.org/article.php3?id_article=18015
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China 15 June 2006
Yahoo! clear worst offender in censorship tests on search engines
Reporters Without Borders said it found Yahoo! to be the clear worst offender in censorship tests the organisation carried out on Chinese versions of Internet search engines Yahoo!, Google, MSN as well as their local competitor Baidu.
The testing threw up significant variations in the level of filtering. While yahoo.cn censors results as strictly as baidu.cn, search engines google.cn and the beta version of msn.cn let through more information from sources that are not authorized by the authorities.
While Microsoft has just said it does not operate censorship, Reporters Without Borders found that the Chinese version of its search engine displays similar results to those of google.cn, which admits to filtering its content. Searches using a "subversive" key word display on average 83% of pro-Beijing websites on google.cn, against 78% on msn.cn. By contrast, the same type of request on an uncensored search engine, like google.com, produces only 28% of pro-Beijing sources of information. However, Microsoft like Google appears not to filter content by blocking certain keywords but by refusing to include sites considered illegal by the authorities.
The press freedom organisation is particularly shocked by the scale of censorship on yahoo.cn. first because the search results on “subversive” key words are 97% pro-Beijing. It 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. It takes one hour before the service can be used again. This method is not used by any other foreign search tools; only Baidu uses the same technique.
Reporters Without Borders calls for search engines operating in repressive countries to refuse to censor certain content said to be “protected”, such as information on human rights and democracy. "We are convinced that these companies can still access the Chinese market without betraying their ethical principles. They must however adopt a firm and clear position in relation to the Chinese authorities”, it stressed.
Methodology
Reporters Without Borders tested Chinese search engines by using the following “subversive” key words: “6-4” (4 June, date of the Tiananmen Square massacre), “Falungong”, Tibet Independence”, “Democracy”, “Human rights” and “press freedom”. The first ten results displayed by each search egine were analysed and then divided into “authorized” and “unauthorized” sources of information.
Research test on "press freedom" (in Chinese), the first ten results:
- Google.com: 7 “unauthorized”, 3 “authorized” sites (72 million results)
- Google.cn: 5 "unauthorized", 3 "authorized" (52 million results)
- Msn.cn (Beta): 3 "unauthorized", 7 "authorized" (800,000 results)
- Yahoo.cn: 1 "unauthorized", 9 "authorized" (240,000 results)
- Baidu.cn: 3 "unauthorized", 7 "authorized" (450,000 results)
Full results of the tests carried out by Reporters Without Borders :
Excel - 28.5 kb
Full results
Distribution of results (JPEG)
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