Pinterest is a social media platform focused on visual content where users can create boards and pin images, videos and other media. The document provides an overview of Pinterest, explaining how it works and best practices for using it effectively. Key points include that Pinterest drives new traffic, engagement is highest with images, and content should include high quality images, calls to action and relevant hashtags for search engine optimization. The document concludes by emphasizing the importance of sharing content to expand one's impact on Pinterest.