In response to John's post, I would say that I would definately make this a ONE
time experiment.  The students will need to subscribe and post to the list during
this next week.  Then, I would have them unsubscribe, unless they wished to become
involved in the actual discussion you are having.

If anyone finds that students are not unsubscribing, please let me know and I will
'encourage' them to do so.

I appreciate the feedback I'm getting both on the list and privately.