Id like to broadcast my OS X desktop on UStream and other streaming services. At the moment I'm using CamTwist to broadcast my desktop and stream to UStream. Unfortunately the maximum output resolution for CamTwist is 320x240 which is really inadequate for screencasts. Can anyone recommend any software that will do the same job but output a higher resolution? I have tried a few software video mixers but none of them have had the desktop broadcast feature. Thanks guys.