Calendaring idea
Here is a really successful project from where I live that Fedora might
benefit from.
http://calagator.org/
http://code.google.com/p/calagator/
It is different from the traditional "calendaring/Outlook" type solution
that has been under discussion, but it is extremely easy for people to
add events to and for others to query and get updates from (RSS and ical
feeds).
Maybe it would be useful for a small segment of our project like weekly
team meetings. It could also be used on much larger scale for Fedora
events around the world.
John