Twitter is a social media platform that allows users to share short messages called tweets. It is considered a web 2.0 application because its value comes from user-generated content rather than software. Creating an account involves providing information, following other accounts, and customizing a profile page. Users can post tweets with text, photos, locations and hashtags to organize topics. Tweets can be liked, shared, or replied to. In education, Twitter allows students to follow educators, share opinions, participate in discussions, collaborate on projects, and build a classroom community.