2. WoW!ter Wouter Gerritsma Web 2.0 Library 2.0 Blogging Tagging Wowter Bibliometrics Databases Libraries Social software Social bookmarking Wageningen UR
5. Social bookmarking Social bookmarking is a method for Internet users to store, organize, search, and manage bookmarks of web pages on the Internet with the help of tags
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7. a tag is a relevant keyword or term associated with or assigned to a piece of information (like pictures, articles or video clips), thus describing the item and enabling keyword- based classification of information it is applied to