Auto-Free Ottawa makes extensive of electronic discussion areas. They are used for announcements, for general discussion and also for event planning. There is also a support area for people that are making a transition to a car-free lifestyle.
If you need to contact a person individually, or via phone, other contact information is available.
The old @flora.org mailing lists have been closed, and have been replaced by a single mailing list afo at lists.ox.org.