Ok, so a quick look through while sitting at the gate:
1) No option for allowing guests to send PMs.
2) We could make a single “Help” forum, and enable guests posting there, with some heavy restrictions in terms of number of posts.
3) We could make new members dump into a “Probationary” user group, with access to only the one “Help” forum, and moderators could add them to the full membership group.
4) We could disable moderator approval, and have a more severe restriction on the first 10 posts a new user makes (specific forums, time limits between posts, require verification).
Thoughts?