How about a difficulty rating for questions?
I enjoy looking at the "iPhone" questions on Stack Overflow.
The only problem is: on any given day there are four types of questions:
45% badly written bizarre newbie questions. "I want to make an RPG like Quake and should I use NSArray for that. Is it hard?"
45% newbie faq-level questions. The answer is always "you forgot self", "that's the controller, not the view", or similar.
5% difficult engineering questions. Advanced technical questions. (Always answered, thankfully, by the same three or four people.)
5% difficult comp sci questions. (collision detection between heptagons, how to guess the user has a belgian accent, etc)
It would be astoundingly useful to distinguish between batch 1/2 versus batch 3/4. Some days you want to help the world by explaining properties as clearly as possible for the 100th time. Some days you are wondering if there are any new 3/4 group questions posted.
Is there something incredibly obvious I am missing here?
Or, can someone important create a "difficult" tag? At a stroke, that would totally change the nature of Stack Overflow. You could just search on "iphone" "difficult" and instantly (if you were feeling that way at that time) get past all the retainCount questions and see only the 3-4 style questions.
If you are reading this and you are important, you should do it right away.