I think the reason is if a question has no answers for a week, it must be pretty hard question! If it was just a crappy question/spam/etc, chances are it would be closed within a week.

That, or it's the the engines way of saying "Sorry, I couldn't get you an answer. Please forgive me :("

I think the reason is, that if a question has no answers for a week, it must be pretty hard question! If it was just a crappy question/spam/etc, chances are it would be closed within a week.

That, or it's the the system's way of saying:

Sorry, I couldn't get you an answer. Please forgive me :(