Twitter is a so called micro-blogging service that allows you to share your current activities with the rest of the world. It’s a very easy to use platform and many thousands of users suffer from a Twitter addiction.
You can share your activities, thoughts, reflections, ideas, … using the Twitter platform itself, but also through instant messaging, SMS and other applications. The main idea behind Twitter is giving an answer to the question “What are you doing?” in 140 characters or less.
If you don’t understand exactly what Twitter does or what it stands for, don’t worry: the nice people from Common Craft have created a great movie entitled “Twitter in plain English“:
Also check out Twittervision which might be even more addictive.