Twitter (“to chirp”) is a social media service which allows you to post a message up to 140 characters. These messages are called “tweets” which can be read by your twitter followers. Tweets can also include links to pictures, videos, websites, your location, etc. Your tweet is displayed on your twitter profile page and on the feed of your?followers. Twitter is used my millions users, some o f the popular ?celebrities on twitter are: ?Ochocino, Aaron Rodgers, Kim Kardashian, Charlie Sheen, and Tuna Traffic.