A social network is a platform or website that allows individuals to connect and interact with others, usually in a virtual environment. Examples of popular social networks include Facebook, Twitter, Instagram, and LinkedIn. These networks allow users to share information, such as text, photos, and videos, with other users, as well as interact through features such as messaging, commenting, and \liking\ or \sharing\ content. Social networks can be used for personal or professional purposes, and can be accessed via a web browser or mobile app.