Wiki's

Here is a link to my Wiki.  Wiki's can be very helpful for collaboration and are much more efficient than email except that there's no push-notification.  There's not a clean way to notify all users thatsomething has been edited.  Actually, you can set it up to notify everyone when something is edited, but then you get over-notified.  Another challenge is buy-in.  You've got to make sure that all planning members understand the technology and are willing to keep in the discussion.