Twitter is a social media platform that allows users to post short messages called tweets that can be shared with the user's followers. Tweets can be used for personal or business purposes, spreading information to millions instantly. Users can choose to have a public or private account and can upload photos, share their thoughts and feelings throughout the day. Business owners commonly use Twitter to promote their work by updating their page frequently. While the author has chosen not to join Twitter personally as they value their privacy, they recognize others may find value in the platform.