Thanks for the link.
This video is well worth watching. It's long. Preliminaries take up the first half hour or so, the the rest is very interesting.
It is interesting that Mitt Romney and Jon Huntsman are not there. Their absence reveals an interesting dicotomy. These six participants are all conservatives who come were raised in rather meager situations. The absentees are moderate to liberal and come from wealthier upbringings. I would really like to hear the absentees' answers to some of these questions.
The actual debate/forum starts about 37 minutes in to the video.
You make a good point about Romney and Huntsman. They would have stuck out like sore thumbs.