Michael wrote:
Does MediaWiki have any concept of groups?
Yes, it has.
ie Would it be possible to define different groups and give different page's ownerships to a certain group so that only users that belonged to that group could edit it? Maybe it's just my Unix background but I think the concept of user and group permissions is a powerful one that is beneficial to use.
It's not exactly "ownership", but you can protect a number of pages in a way that to edit it you'd need to be in group X, or you can restrict editing on a namespace to some group, so each group would edit on its own namespace.