Some sort of test seems a bit overkill to me and would put a lot of new signups off. Not every newb posts the same crap questions and in the wrong forum. I think the majority of people favour the newbie jail option though. It was a great quarantine for junk posts and spambots etc, now that stuff gets frittered all over the forum.
Maybe it is a bit of an overkill, but perhaps there is a way to make sure they have to read the posts and agree that they read them before they were let out of jail, so to speak.
I know most people ignore terms and conditions and/or board rules when they click yes that they have read them for pretty much everything. Just thought maybe a question or two would make them more inclined to read them.
Congrats on the Sr. Member status btw. Sig looks good!