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Tagging & Folksonomy:
http://www.youtube.com/watch?v=wq6vwDSPcok&feature=PlayList&p=1F08B4B29B42EA8D&playnext=1&playnext_from=PL&index=2
Social bookmarking: http://www.youtube.com/watch?v=x66lV7GOcNU
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Tagging & Folksonomy:
http://www.youtube.com/watch?v=wq6vwDSPcok&feature=PlayList&p=1F08B4B29B42EA8D&playnext=1&playnext_from=PL&index=2
Social bookmarking: http://www.youtube.com/watch?v=x66lV7GOcNU