[sanddrag]

I have a lot of questions about the regional webcasts:

First, can any informed person give me a number of approximately how many people "tune in" for one of these?
Also, what is the typical bandwidth size of the stream?
Why are some events webcasts and others not? Why are some archived (by NASA) and others not?
Where does the video come from, is it the same signal as what goes on the big screen?
What all goes into webcasting a regional? (equipment, staff, cost, etc.)

Answers to these questions would be greatly appreciated.