The document discusses incorporating user-generated content into classroom lessons. It reviews technologies like wikis, blogs, photo sharing, and video that allow students to contribute online. Wikis allow collaborative writing and sharing of information. Blogs enable students to publish online and comment on each other's work. Photo sharing sites allow students to upload, tag, and edit images. Videos on sites like TeacherTube can be used for educational purposes. The goal is to explore how these "2.0 technologies" can enhance learning through student contributions.