> 2. Just before the meeting ...
> 3. After the meeting ...
If 2.5 is 'During the meeting...", you might want to look at building on one
of the existing chat modules,
http://drupal.org/search/node/type:project_project%20chat
Might one add to a chatroom features like agenda item, current motion,
voting/consensus indication, current speaker, facilitator role to emulate a
meeting environment?
Another place to look is the decisions module,
http://drupal.org/project/decisions