http://www.pcmag.com/article2/0,4149,912123,00.asp is the "Top 100 Web Sites (You didn't know you couldn't live without)," from the March 2003 issue.

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http://www.pcmag.com/article2/0,4149,912429,00.asp is the "Top 100 Classics - These classics are the well established and typically well-known Web sites that you know you can't live without and that you're glad that you don't have to."