One of the commonly agreed issues with Flash based sites is the inability to use the back and forward buttons on your web browser, page refreshing, or link to a specific page within a Flash site. Maria Lubenova and Rostislav Hristov of the small studio Asual DZZD have developed a great, and incredibly easy solution to these issues.
SWFaddress is a powerful library that provides deep linking for Flash and Ajax. The library has full support for both AS2(eww) and AS3. They make it so easy that there really is no more excuses for not including this support in our Flash applications. I will be supporting this in my work whenever I can.
You can download the demo and source codehere.