Reddit is a social media platform where users can share content, ask questions, and discuss various topics. It consists of "subreddits," which are individual communities focused on specific interests, such as news, hobbies, or entertainment. Users post text, links, images, or videos, and others can comment and vote on these submissions to indicate their approval or disapproval. This voting system helps popular content rise to the top, making it more visible. Reddit fosters open discussions and is known for its diverse user base and wide range of topics.