We had another discussion on game design and mechanics questionsdiscussion on game design and mechanics questions recently, as well.
The guidelines for scoping a question about the professional aspects of the industry are the same as the guidelines for scoping any other question, I'd imagine. Be specific in your needs, focus on an actual problem you are having, et cetera.
Remember that the basis for closing a question isn't how many people want to know the answer to it, it's how answerable the question is within the guidelines of the site. Sometimes the question is just too broad no matter how you toy with the phrasing, and in those cases the question is just not appropriate here -- other venues, such as the chat and sites like GDNet, are probably better.