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 is simple and involves following others so their tweets appear on your timeline. Tweets can include photos, locations, hashtags, and mentions of other users. Educators can use Twitter to engage students by sharing opinions, collaborating on projects, and having classroom discussions in a fun way. However, Twitter can also be distracting for students and intrude on a teacher's personal life if not used appropriately.