edutagger is a social bookmarking service for K-12 learners and educators, allowing you to store your web links online and share them with others, all within an educational context.
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Search on Spock to find your friends, old acquaintances, your favorite celebrities, or people you would like to meet. With Spock you can discover people by searching for their name, or by using descriptive tags. For example if you type in "NFL Quarterback" into the search box, Spock will pull back a list of people who play quarterback in the National Football League.
Enter what you're reading or your whole library—it's an easy, library-quality catalog. LibraryThing also connects you with people who read the same things.
B. Krause, R. Jäschke, A. Hotho, and G. Stumme. HT '08: Proceedings of the Nineteenth ACM Conference on Hypertext and Hypermedia, page 157-166. New York, NY, USA, ACM, (2008)
C. Hayes, P. Avesani, and S. Veeramachaneni. ITC-IRST Technical Report. http://sra. itc. it/people/hayes/pubs/06/hayes-ijcai07-tech-report. pdf, (2006)