How do publications differ from web sites? What are the nuances of publishing on the web and making use of the tools of the Open Web Platform? Do publishers really need more than linked web sites? Yes, we do! Portable Web Publications Use Cases and Requirements provides detailed use cases and requirements from the Digital Publishing Interest Group, focusing on two primary issues. These use cases look at the portability of published works, which allow users to transfer their books, articles, and magazines from state to state and device to device. The document also seeks to define the book or publication as a rightful citizen of the Open Web Platform. Thousands of years of successful history, knowledge and information sharing in easily consumable, producible, and storable formats must be recognized as we focus on the tools of the Open Web Platform and what it means for Publishers, Authors, and Readers today. We welcome your feedback on GitHub.