A number of people have asked me to make some videos, so I just got my first condenser microphone and so I can make some amateurish screen casts. I will try to do better in the future.
A quick overview of PubNub Live Chat @unix.com
The video is best is you set the Quality to HD 1080. The audio seems OK even though my windows are all wide open and the ocean breeze is blowing in the background.