Pinterest is a visual discovery platform that allows users to explore and share ideas through images and videos. Users can create "boards," which are like digital pinboards, to organize content around topics they find interesting, such as recipes, fashion, home decor, or travel. When users find something they like, they can "pin" it to their boards, making it easy to save and revisit ideas later. Pinterest also offers a search function to help users find inspiration based on keywords. It's commonly used for planning projects, finding inspiration, and discovering new trends.