So, the difference that I see between Stack Exchange sites and what I'm talking about is that each Stack Exchange site is based around one content area. Within that topic, you have people of all mastery levels interacting and problem-solving. Many of those questions/answers are simple, many are obscure and complex, and many are what I would be looking for.

I think the difference between any question & answer and what I would consider a "hack" is that it would be a somewhat common problem with a consistent way of solving it very easily that many people might not figure out.

I'm thinking of creating a community, very much like a Stack Exchange site, but NOT based on a certain topic (programming, cooking, etc.). Instead it would be based on the idea of sharing these "hacks" from any topic.