This document discusses how Web 2.0 tools can be used to teach writing. It provides an overview of Web 2.0 and how it enables collaboration and user-generated content. It also describes two Web 2.0 tools, Gliffy and Wikispaces, that allow students to create diagrams, organize information, and collaboratively write and edit documents online. The document advocates using these kinds of tools to engage students in the writing process and help teachers implement student-centered writing activities.