Monitoring your network while watching a Youtube live streaming (http://youtube.com/live/), you can see that they are downloading a file to your cache, and this file is actually the live stream.
Bitgravity use the same way to deliver their live stream since years (Check Twit.tv for example).
Does anyone know what is the server side used for this ? and how can someone achieve this instead of using Adobe FMS, Wowza or Red5 ?