Questions can be useful if the newbie has taken appropriate care to be clear, concise and neither the question nor the answers have appeared in the forum in any obvious places before.
Just to raise the usefulness of this post: I'd like to point out that newbies are posting messages essentially void of any useful content in order to escape newbiedom. This probably decreases the usefulness of the board for the newbies who actually play by the rules making them want to escape etc...
I think the current newbie confinement strategy is failing and an alternative needs to be found.
How about "Newbies must request whitelisting and their posts are reviewed for usefulness before acceptance"? Similarly, non-newbies should be demoted to newbie if their posts show insufficient usefulness upon review.
ByteCoin