The Designing for Flex series surveys new possibilities, techniques, and challenges designers and developers will confront when designing Flex rich Internet applications. Specifically, the series covers: planning and structuring Flex applications, special considerations for designing web versus desktop Flex applications, the design of rich content displays, appropriate use of motion in application design, improving an application’s efficiency of use, and ensuring your users feel safe using your application and trust it with their data. We have supplemented the series with an ever-growing set of components and sample code to assist you in applying the theory presented here. In the near future, we also plan to release the official set of "Flex Interface Guidelines" that describe in depth how to apply the Adobe standard for Flex application design to your projects.