In some days ago I was invited to Bittorrent Live Beta.
Yes, there are many services allow you stream video, but this one is unique - BTLive allow peer-to-peer (P2P) streaming (like torrens, yep). P2P streaming is not something special, it is used already somethere, but BTLive allow you make your own stream, without any ads and add there you want.
P2P streamming (in perfect) allow you have more control, and make "server" or main "seeder" have less need on upload speed as watchers may share video to other watchers.

Whatever while I playing with my new toy, I have some plans about streaming, but I have no expriens in flash, video editing, music creating and etc, so I will be glade if somebody will help me to imrove video content as I have some plans about streaming, not only gameplay and animation streaming, what I do now.

P.S. You can watch me at http://live.bittorrent.com/channel/greyed it is still Beta, and also I learning all this streaming staff and etc.

Added: there is one more free P2P streaming service/software, but this guys mainly planning to add ads after they end main development.