The World-Wide Web has brought us two important resources: ubiquitous browsers and a global information repository. In the current model, these two resources are tightly coupled. By introducing the concept of a programmable intermediary between browser and server, Web Browser Intelligence (WBI) has relaxed this coupling. WBI allows the browser to execute arbitrarily complex commands using the network of Web servers as an information resource. This architecture enables automatic personalization of the Web for individual users, automatic restructuring of information on servers, and collaboration among Web users.