Site suggestions -- Notification Module?

First, great job on this site -- really shows how simple and powerful Drupal can be.

Couple of suggestions:

It would be nice to have the notification module installed here so we can get email updates of new content added.

Also, how about exposing the user list to registered users, so those going can see who else is attending. You might also want to add a couple of profile fields -- like job title and why you are interested in attending.

Thanks,
Sam