When I installed the wiki, I made the decision to turn on white-list edits (edit requires login) and disable account creation by non sysops. This was intentionally tight to keep out spam until I had more time to finish setting up the server and the website.
Today, presumably after posting this sites url on #catalyst, I got this comment about someone wanting to help but didn’t want to be bother with waiting on me to create a login. Fair enough.
Not being one to look a gift horse in the mouth, I’ve changed the wiki configuration. Anyone can now create account and edit wiki content. Anonymous editing is still forbidden. IF things get out of hand, I’ll probably reverse this decision.