Live Broadcasting with Wirecast and Ustream

I've been messing around with live broadcasting via Ustream and using some software called Wirecast that allows me to use two video cameras and switch live between the two. That way I could have one camera on a mirrored monitor to capture what the speaker has on his podium computer and another camera on the speaker. Wirecast allows you to switch back and forth between them using a number of transitions. It's almost like running your own TV production from your computer screen. Wirecast also allows you to put titles under a speaker to identify them. You can also put logos and other graphics up as well. Setting up Wirecast wasn't too difficult. Since my Mac laptop only has one firewire input, I got a firewire hub and plugged both of my video cameras into it. I'm using a Sony VX1000 and a Sony VX2000 for testing. I had some problems initially with an older video camera, but when I switched to these two it worked just fine. Once I got both video cameras working (by selecting Show Asset Manager from the Media menu), I then went to the Broadcast menu and selected Broadcast Settings. In the Broadcast Settings window I set the Encoder preset to Flash Medium Bandwidth and the Destination to UStream. I then entered the name of my UStream channel and my username. After that I clicked the Generate RTMP button and entererd my UStream password. The RTMP url then appeared at the bottom of the window and I clicked Save to close the window. I then clicked Wirecast's Broadcast button to begin broadcasting and pointed my browser to ustream.tv. After logging in there, I clicked the Broadcast Now button and it was all set up for live broadcasting. I just clicked the Start Broadcasting button and also the Record button (to record a version for later playback). UStream also has a chat option, which is very nice for fielding questions from your audience.