I've just finished creating a google groups for us:
http://groups.google.com/group/reimaginingourcity?hl=en

By joining, members will be able to keep updated on the progress of the project, take part in discussions, and post messages for everyone to read.

We also have a Facebook site at:
http://www.facebook.com/pages/Re-Imagining-Our-City/8081964359

If you are interested in what we are doing, take a moment to join up on either site!