A spambot hunt game! I can see it now, something like the gunfights in grizly gulch, but instead of a gun you yell "ban!" really loundly, and instead of saying their outlaw lines you here voices saying "free samples!" or "interesting comment!"
Oooh dear, and I bet someone is now going to make it ;D.
Seriously, I think the punbb question was a good idea if we can find a way of it not irritating new members.
Certainly when I tried it myself, while it was fine for registering the new account, it got annoying very quickly sinse it wouldn't let me post a new topic. I'd write the answer and hit the answer button and then just be put back to the question again and again and again! even though the answer was obviously write sinse I'd already registered.
I'm less a fan of mod approval or validation, sinse 1, I wouldn't like to have people having to depend entirely on myself and the other mods' time, and 2, I always feel it's a litle unfriendly.
Certainly myself if I needed to contact a mod or similar I'd be a litle worried about registering somewhere, which is not what we want.
Maybe when sander redesigns the site he could look at creating a better question system such as the one they have on kingdom of Loathing that I've mentioned before.
With our dreaming and singing, Ceaseless and sorrowless we! The glory about us clinging Of the glorious futures we see,
Our souls with high music ringing; O men! It must ever be
That we dwell in our dreaming and singing, A little apart from ye. (Arthur O'Shaughnessy 1873.)