The document discusses the endowment effect in inbound marketing. It begins by describing a classic experiment where students assigned mugs valued them more highly than students who were not assigned mugs. It then provides examples of how the endowment effect can be leveraged in digital marketing, including free trials that allow customers to experience products, permanent discounts that make savings feel owned, and writing copy that helps customers imagine owning a product. The document argues these approaches can increase purchase rates without direct pressure on customers.