Are you looking for an option for live broadcasting over the internet?  Check out Ustream.tv.  Ustream.tv is a free service that makes it extremely easy to get started with your own Internet Broadcast.  These “Netcasts” are available to be viewed from Ustream’s website or from any website that alllows the embedding of their Flash-based viewer.  All you need is a broadband internet connection, a decent quality webcam or firewire connected digital camcorder, and an idea.  Ustream also has a record option to record the netcasts for playing back later.  I have used Ustream to broadcast school events and a few classroom projects.