Twitter is a social networking site founded in 2006 as a service to allow friends and co-workers to communicate and stay up to date with each other through the use of tweets. Tweets are 140 character length messages which answer the basic question, "what are you doing?". Users publish these tweets to their profile pages and everyone who has signed up to follow that particular user will receive the tweets as well. This micro-blogging framework has enabled news organizations, politicians and celebrities to interact with the community of users and provide real time updates in a way traditional media (newspapers, blogs, etc..) was never able to do.