Web 2.0 is interactive information sharing and collaboration on the Web. A Web 2.0 site allows its users to interact with other users or to change website content e.g. Facebook, Twitter & YouTube
Public Sphere is a social activity where people can freely discuss and identify societal problems, and through that discussion influence actions.
Online Journalism is the reporting of facts and information that is distributed on the Internet
Citizen Journalism is when members of the public engage in journalism e.g. Wikipedia & Perez Hiltons blog
Social Networking is the interaction between the public online e.g. Facebook
Interactivity is the idea of the public acting with each other & responding to users online
Accessibility is the ability to access certain topics more easily
