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The Effectiveness Of Internet Content Filters, Philip B. Stark
The Effectiveness Of Internet Content Filters, Philip B. Stark
Philip B Stark
Abstract. As part of its defense of the Child Online Protection Act, which seeks to prevent minors from viewing commercially published harmful-to-minors material on the World Wide Web, the U.S. Department of Justice commissioned a study of the prevalence of “adult” materials and the effectiveness of Internet content filters in blocking them. As of 2005–2006, about 1.1% of webpages indexed by Google and MSN were adult—hundreds of millions of pages. About 6% of a set of 1.3 billion searches executed on AOL, MSN and Yahoo! in summer 2005 retrieved at least one adult webpage among the first ten results, and …