[转载]The State of Search Engine Safety

原始出处：http://www.siteadvisor.com/studies/search_safety_may2007

AbstractOne year after releasing The Safety of Search Engines in May 2006, we reassess the state of search engine safety and evaluate changes in search engine safety levels over time. This report also follows our second study, The Safety of Search Engines - Revisited, released in December 2006.
In this study, we compare the safety of leading search engines, using McAfee SiteAdvisor’s automated Web site ratings. We find that AOL returns the safest search results, while Yahoo! returns the greatest percentage of risky results. Since May 2006, search engine results have become safer, primarily due to improved safety of sponsored results on Google, AOL, and Ask. Despite this improvement, dangerous sites are found in search results of all of the top five search engines, and sponsored results continue to be significantly less safe than search engines’ organic results.