I think a subject like that might be good, if it can be kept focused on the hobby.
There is already a thread in the forum called "Whats your biggest modeling foul up?" I'm not certain how much attention its getting, but I like the idea, because often I've found myself taking the hobby just a bit too seriously sometimes, so its good to step back and laugh at someones annecdotes from the hobby and to add your own.
I'd say as long as it can be kept clean and on topic with the hobby, I'm all for it.