Discover From This Page & Topic: [Discover] bookmarking
[Discover] YouTube - Social Bookmarking in Plain English http://www.youtube.com/watch?v=x66lV7GOcNU
(video tagging socialbookmarking youtube) 
[Discover] Social Annotation: Seamless Integration of Social Bookmarking, Web Highlighter, Sticky-Note & ... http://www.diigo.com/ (social sharing tagging video)
[Discover] LookSmart's Furl - Your Personal Web http://www.furl.net/ (tools search bookmarking tool)
[Discover] Only2Clicks - speed dial to favorite web site and make it your start page http://www.only2clicks.com/index.php (bookmarks)
[Discover] Pligg Content Management System (CMS) http://www.pligg.com/ (cms webdesign tools software)
[Discover] YouTube - Using del.icio.us in education http://www.youtube.com/watch?v=A1pOsYjCvE8 (delicious classroom socialbookmarking bookmarking)