Pinterest can be used to sell products and automatically post new Shopify products to a dedicated board, making it easier for customers to imagine the product in their own homes. Zapier's automated workflows allow users to create customized connections between apps without coding knowledge, including integrating Pinterest with Shopify. The process involves setting up a trigger event that sends information from Shopify to Pinterest, and an action step that creates a pin on the board, customizing fields such as the image and link. With this setup, new products released on Shopify will be automatically pinned to a Pinterest board, making it easier for customers to discover and purchase the product.