Bo Leuf has extensive experience in technical communication and teaching, coupled with a deep understanding of cross-platform software product design, user interfaces and usability analysis. He maintains several professional and recreational Internet Web sites, including one that provides commercial Web hosting and Wiki services for others. An independent consultant in Sweden for more than 25 years, Bo has been responsible for software development and localization projects. He is currently a freelance consultant and technical writer, specializing in software documentation, translation, and design-team training. He is a regular contributor to a major Swedish computer magazine, and a frequent speaker at technical conferences.Ward Cunningham is widely respected for his contributions to the practices of object-oriented development, Extreme Programming, and software agility. Cofounder of Cunningham & Cunningham, Inc., he has served as Director of R&D at Wyatt Software and as principal engineer at the Tektronix Computer Research Laboratory. Ward led the creation of Fit, and is responsible for innovations ranging from the CRC design method to WikiWikiWeb.