ok wierd.. did a quick google search and found this link for groups: http://world.waze.com/dashboard/groups/
If I goto that link, then click "My Dashboard" at the top, the "Create, join or manage groups" link is showing up and is clickable. I go there, and then click "My Groups" tab and it's empty.
Also, when I go BACK to waze.com, logout and log back in and goto "My Dashboard", the groups link is gone still/again.
I have tried in Google Chrome and Internet Explorer browsers, with the same results.