If you aren't yet convinced osflash.org is one of the most essential truck-stops for the Flash community, check out the open source Red5 project by that's under development there. They're making some serious progress in reverse-engineering the RTMP protocol used in Macromedia's Flash Communication Server and have already managed to create a NetConnection with their server. With a bit of luck we'll be seeing an open-source FlashComm server, who knows one day even with the ability to stream audio and video like its commercial counter-part. Exciting times ahead for the Flash community!