Alan, I was talking to jemay about one of the sub forums with a suggestion. His moderator controls do not appear to let him do what we think is possible, so let me propose it here and we can find an alternate solution.
1. When a new forum reader starts drilling into the US forums, they may think they need to go all the way down to their state to post a question.
2. When a new forum reader comes to the US forum they may post a question at the US level, when it should be in the subforums for a region or a state.
An announcement thread (or at least a forum sticky) for all US forums and subforums (all the way down to the state forums) with basic guidelines for when to post at each of the levels. The post would be identical for all the forums, so hopefully there is a way to make one post appear in all sub forums below it.
Now if this is currently posted somewhere, I have not run across it so likely other less OCD forum followers will also not see it (and we already discussed how much I am spending here in the forums at the disgust of other members of my family.