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Collaborative tagging describes the process by which many users add metadata in the form of keywords to shared content. Recently, collaborative tagging has grown in popularity on the web, on sites that allow users to tag bookmarks, photographs and other content. In this paper we analyze the structure of collaborative tagging systems as well as their dynamical aspects. Specifically, we discovered regularities in user activity, tag frequencies, kinds of tags used, bursts of popularity in bookmarking and a remarkable stability in the relative proportions of tags within a given url. We also present a dynamical model of collaborative tagging that predicts these stable patterns and relates them to imitation and shared knowledge.

We have created a list of 100 tools we think will encourage interactivity and engagement, motivate and empower your students, and create differentiation in their learning process.

"WebTools4U2Use will introduce you to a lot of different tools. But how do you choose the right one? And how do you keep up with all the new and often better tools? Here are some ideas..."

EtherPad is the only web-based word processor that allows people to work together in really real-time.

WEB 2.0 RESOURCES FOR 21st CENTURY INSTRUCTION