I could be wrong, but it looks like the groups are individual to the user, meaning I'd have to set up my own NJC group on my device and populate it with my own contacts.
If that's the case it may not be as useful as originally intended.
Could a NJC '11 Facebook page be a better idea? If everyone subscribes to the group can the FB app be setup to send push notifications upon an update?
Twitter is a possibility as well, but then only one person could send updates.
Bottom line is we need an app that allows one to subscribe to something, then receive updates from any one subscriber to that something. If GroupMe can do that imi all ears. If something else can do that I'm all ears as well.