- Author's Web site "Joel on Software" is among the most popular independent sites for programmers with between 5,000-15,000 page views daily. His site has been called the "anti-Dilbert manifesto" and quoted by Salon, Le Monde, The Motley Fool, and others. - Focuses on what programmers need to know about UI (User Interface) design, with numerous examples of how to improve common programs. - Written with an audience of programmers in mind, but does not assume prior programming knowledge, nor any specific language. - Limited competition to this book - what books are available are usually "laundry lists" of actual bugs or rants against "bad UI" or too focused solely on Web sites.