The problem is that no matter what you do, you end up logged in as WelcomeGuest. Isn't there a config option to disallow using this as a default? Would that force users to have to log in?
Actually, I prefer that users have to be logged in under a real username to edit anyway. Read-only is fine, of course, but with editing as wide-open as Wiki encourages, there has to be an audit trail for any kind of peer-review to work.
Oh, BTW I put up another [link|http://twiki.iwethey.org/twiki/bin/view/Main/ComingSoon|section ] and a few definitions that it points to.