Web 2.0 enables collaboration and sharing of information among users on the internet. It emphasizes user-generated content, user control, and interoperability in contrast to the traditional static websites of Web 1.0. The document discusses how Web 2.0 will define future communication through tools like Skype, Twitter, Facebook and YouTube that facilitate interaction. It also presents opportunities for online education through open courses from Stanford, MIT and other institutions that allow students to learn through participation, creation and collaboration on the web.