This document discusses social networking, open source software, and the web as a platform. It defines social networking as sites that allow users to connect with others and share content. Examples provided are MySpace, Facebook, and EdusPaces. Open source software is described as software that improves as more people use and contribute to it. The web as a platform refers to sites that allow users to collaboratively create and share content online. Examples given are Zoho and MindMeister. Tasks assigned include collaboratively writing a document on a web 2.0 site using tools like tables and images, updating bookmarks and mind maps. Suggested references on open source and Google/Facebook apps are also provided.