This document discusses e-learning 2.0 and the pedagogical use of web 2.0 tools. It begins by introducing e-learning 2.0 as applying web 2.0 principles like collaboration and sharing to e-learning. It then discusses characteristics of web 2.0 like user-generated content and social aspects. Examples of technologies for e-learning 2.0 are also presented, such as blogs, wikis, podcasting, and social networking. The document also discusses some e-learning 2.0 projects and potential benefits like customization and knowledge sharing. However, it notes there could also be a "pedagogical illusion" with issues like loss of coherence and difficulties testing and assessing students.