“I have to think much harder when I design rich interfaces than when I work on standard Web applicaitons. With the increased flexibility and more components comes a higher risk of making silly mistakes. If I use a component inappropriately, users can’t figure out what to do, even though the components may look cool. The purpose of this article is to help designers avoid mistakes and to help them choose (or design) components based on sound, fundamental principles of usability.” (Donna Maurer Spencer – UX Magazine)