I’ve been thinking about video streaming & video hosting recently, and I just happened to come across Ustream today.
Streams are in Flash (FLV), and it has almost all the social aspects of YouTube (rating, comments, and chat [YouTube doesn’t have]). It is somewhat disappointing that it doesn’t seem to have an easy way to share the video (like YouTube).
Anyway, it seems like it would be an interesting tool for conferences. In fact, last month the EduCon 2.0 conference used it in conjunction with a wiki.
Check that out here – http://www.ustream.tv/channel/educon-channel-1