Can the newsletter also be available via RSS? I understand that you wouldn't want it to appear as a normal article (probably?), but some people might prefer it delivered by RSS if that's their prefered format but they can't cope with the volumne.
Don't worry, personally I'd be subscribing to both full feed and newsletter! Keep up the good work.
As I Twittered at the time, you have to wonder if the moderator checking his Twitter feed every few seconds is exactly what killed the pace of the panel...
Likewise, there are plenty of indirect cues you can take from the audience without listening to precisely the members who aren't really paying attention!