Comment: I've upgraded, I love it, but I've got some questions

" 2.) The possible user levels are "associate", "member", "subscriber" and "other" I believe. I know what the first two are for, but what are the latter two are for? "

Basically, subscribers are only allowed to read public pages. Compared to members, they cannot submit new articles, and they cannot access pages with restricted access.

"Other" means, quite simply, all surfers that have not been authenticated.

More information on this subtle topic, and on community structures, at the documentation pages for users. Guess users/index.php should be a good starting point.