Adobe's SigFUD about RTMP protocol
From Adobe's RTMP specification website - http://www.adobe.com/devnet/rtmp/:
Adobe is expected to post the Real-Time Messaging Protocol (RTMP) specification on the Adobe Developer Connection at this URL (www.adobe.com/devnet/rtmp/) in the first half of 2009. Please check back for updates. You can learn more about plans to publish the Real-Time Messaging Protocol (RTMP) specification in our press release.
So now Adobe has issued a DMCA takedown notice for a project called rtmpdump which implements the very same protocol...
But there is still some hope - http://lkcl.net/rtmp/ :)
...or download locally hosted rtmpdump-v1.6.tar.gz