Programmers have made use of patterns for a long time. Patterns provide a way to tackle a problem that has been solved before. They provide a framework for problem solving. Now web designers can utilize that same workflow theory as explained in The Design of Sites: Patterns for Creating Winning Web Sites (2nd Edition) by Douglas K. van Duyne, James A. Landay and Jason I. Hong. This book goes a long way towards providing designers with a reference for solving web design problems and a process tool for discovering web site useabilty solutions.