The document discusses the key aspects of Web 2.0 including the participatory and social nature of the web where users can create and share content. It contrasts Web 1.0, which focused on users only reading and reviewing content, with Web 2.0 which enables users to create, collaborate and contribute content. Examples are given of popular social networking sites, blogs, wikis and video sharing sites that embody these Web 2.0 concepts. The final sections discuss uses of Web 2.0 tools like blogs, video sharing, Google Apps and bookmarking in an educational context for both teachers and students.