2. Disclaimer Twitter is constantly changing. While we periodically review this guide to reflect these changes to the interface, we cant always guarantee that what you see on your screen will exactly mimic the information on the guide. 3. What is Twitter?
Twitter is a free social networking and micro-blogging service.
4. It allows users to send and read other users' updates (otherwise known as tweets). 5. Users create text-based posts of up to 140 characters in length. 6. The tweets are displayed on the user's profile page and delivered to other users who have signed up to receive them.