RESTful Flash. In response to my question — Can rich Internet apps be web-friendly? — Macromedia's Kevin Lynch has put together an example showing how to achieve RESTful Flash:
This weekend I created an example showing how rich internet applications can display their current state
in the URL as the user interacts locally. This enables a user to
bookmark a particular state in the local application, and also enables
rich internet applications to be composed with others through REST.I've also posted the source code for the example, so you can see how it works.
If you're developing applications in Flash or Flex I encourage you to
display useful state information in this way so others can easily
integrate and leverage your application with theirs across the
internet. [Kevin Lynch]