Adobe released a beta of Flash Player 9 for Linux today. The update allows Linux users to enjoy the benefits of websites that are using the Flash Player for video, like YouTube, and rich Internet applications, like Yahoo Maps Beta. Flash Player 9 is also required to run rich Internet applications built with Adobe Flex 2. The free Flex 2 SDK, in combination with the free Flex 2 Data Services Express allows developers to create RIAs on the Linux platform at no cost. Flex 2 applications take advantage of the new JIT compiler in Flash Player 9 for much faster code execution. Obviously Flash can do many things beyond the browsers' limitation, but do web applications you are building need features like vector graphics, JIT performance, binary sockets, rich media, and local storage?