Taylor wants to stream let's play videos on multiple streaming platforms simultaneously. Leo says that TWiT does this to live stream. We use an expensive hardware box called the Elemental. The chatroom suggests restream.io, which claims you can stream to 30+ platforms at once. Another server-based solution is called Wowza.
Canalay teaches TV production at Washington State University and every night they do a nightly newscast via public broadcasting. They want to expand and go to streaming the broadcast online. Leo says TWiT uses the TriCaster which uses SDI (a pro version of HDMI) and then routes that through a Blackmagic encoding card. From there, they can stream to the net via either UStream or Justin.TV. Then anyone can view it from all over the world. Leo says they were just using a plain PC for a long time.