"The creator and administrator will have full control over the site, so you really dont want a lot of administrators. Moderators will have control over the users and content primarily. They cannot
change he wiki settings with the exception of templates. Nor can they undelete versions.
So the bottom line here is, maybe one or two administrators to have control over the whole wiki, and some moderators to help out with the day to day operations of the wiki. Beleive me it is a safe way to run a business, and your wiki is your business."