How do we increase API adoption? One method is by making the web service more discoverable. In this presentation, I explore 3 areas of API marketing; visibility, usability, and advocacy. In it, I outline discovery formats and API definitions that can help create more usable front ends. I list the the API directories and marketplaces that catalog REST services to make your interface more findable. Also, I describe best practices for crafting usable APIs, and strategies top evangelists deploy to build effective developer communities that convert developer visitors into developer users. Given at the Nordic APIs Platform Summit 2017.