Pinterest is a social media platform that allows users to create virtual pinboards to collect and share images and photos linked to products. It has over 10 million monthly unique visitors and 10.4 million registered users, generating more traffic than YouTube, Google+, and LinkedIn combined. Users pin images from websites to their boards, providing valuable backlinks. Pinterest is a powerful marketing tool for brands and businesses to showcase their products and services, promote their brands, and generate viral traffic to their websites.