RTMFP (Real Time Media Flow Protocol - yep, we've moved from 3 and 4 letter acronyms to 5 letter acronyms!) was demonstrated at MAX, both in the Day 2 keynote and in the Sneaks. As demonstrated by Agent Steve in Milan and Agents D & D in San Francisco, RTMFP provides the ability to do direct client-to-client streaming. But what exactly is RTMFP? How does it differ from what was available in Flash Player previously? And why is yet another protocol needed? If you want to know the answer to these questions and more, check out Nigel Pegg's post entitled Try RTMFP and Client-to-Client Direct Streaming, With FP10 and Cocomo, Today!.
http://www.rtmpd.com/wiki/rtmfp