Top 20 Most Popular Social Bookmarking Websites - 7 views
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Allison Kipta on 12 Dec 09"Here are the 20 Largest Social Bookmarking Websites ranked by a combination of Inbound Links, Alexa Rank, and U.S. traffic data from Compete and Quantcast. Although no traffic metrics are completely accurate we do believe the data below to be useful for gauging relative audience size."