David Hogue is the director of information design and usability at Fluid, Inc., a digital design and development firm in San Francisco specializing in e-commerce websites and RIAs. He uses his training in applied psychology and cognitive science to study how people learn and work in the digital world, and develops workflow models and user interfaces that meet their needs and expectations effectively and efficiently. David has worked on projects for a diverse range of clients including Charles Schwab, Warner Bros., The North Face, Reebok, and Timberland.