Wikis are a terrific collaboration tool that allows users to add, remove and edit. I especially enjoyed the Commoncraft tools and thought they offered simple explanations of these web tools. The Truncation lesson plan and Yahoo Battle were excellent. I am so excited about learning to use and to teach the necessary skills for 2.0! Have you tried the http://teachlibrarywikispaces.com or the http://eduseapes.com ? Thank you for this wonderful learning opportunity!