So there are a few sites that have Ten Questions for this and that. This site is about problem solving. Specifically, you ask these questions in order to focus your attention on what's important to you.
The "Plus One" came after all the rest. It's the top question, the first one to ask: What problem are you trying to solve?
It's not original to me, others have made the same point - asking this question helps you to not insult someone who's out of their depth when they're asking you about something you know a lot about.
The problem I'm trying to solve with this blog is to have a place to discuss problem solving, demonstrate the use of the questions, and get feedback on all of it.