Web 20.11 is Discovery Education's FREE Web 2.0 for 2011 resource page.
On it, you can access great content on Internet Safety, Media Literacy and links to Web 2.0 Tools. The site is rich with little flash videos detailing the explanation and use of Web 2.0 Tools in the classroom.
20.11 Tools are listed in the following categories: Presentation Tools, Video Tools, Mobile Tools, Community Tools. There is also a Tech Tips blog with ideas and tips for using different tech tools to help your students learn.
This is a great resource for new teachers and veterans to learn about Web 2.0 tools.