The Web Economy: Goods, Users, Models, and Policies examines how the web economy differs from traditional economic settings and what implications these differences have. It goes on to formalize a minimal common understanding of incentives and mechanisms in the web economy. Accordingly, it introduces the concept of web goods, a classification of web users, and the main functions of the web economy. The WebEeconomy: Goods, Users, Models, and Policies is not a comprehensive review of the economic literature related to the web. The focus is on the web as a standalone economic artifact with its own functionality and processes. It studies goods, users, models, and policies within the web domain, and advances Web Economics as a field that studies economic motives and implications within the web. In particular, it explores how we can balance open access to online information while also providing suitable incentives, producing content, and developing network infrastructure. The Web Economy: Goods, Users, Models, and Policies will be of interest to anyone with an interest in the science of the web generally and particularly in the emerging landscape of the web ecosystem.