[kardinal]

Found some stuff but don't know if you are familiar with it. It's not p2p but more like podcasting sites. Sorry I did not know where to published it, move it in another thread if it belongs somewhere else.
1.
www.kyte.tv - enter this invite code: "gigakyte" and then register yourself an account.

2. http://www.ustream.tv/

3. http://netineo.com/en/

4. http://www.stickam.com/ http://www.stickam.jp

5. https://neokast.com/ Have to register here https://neokast.com/?CreateAccount and they will send you invite in a week.