This is not necessarily a "specific question" discussion. It's just an example to raise the issue. I'm looking at this question: Good introduction to SubVersion for unexperienced users?
This is a tough one; deciding the scope of your site. This question is about SubVersion... which is running on Unix. The involvement regarding Unix/Linux seems somewhat accidental, but I'm not an expert on the subject. That's why I am asking you.
So, the question becomes... is this a "site about Unix and Linux" or does the scope extend to "Support for Unix/Linux and applications that run on it?"
I have no hesitation about applications where Unix is a large component of the question: i.e. "Is there a Linux Application to burn Blu-ray Discs?"
But what about: "How do I back up my bookmarks in Firefox?" (from a user who just happens to be running Linux)
Think about it and decide what's on topic and what's off topic regarding application questions. I'll leave it up to you guys. And keep an eye out for similar border-lining questions and bring up these discussions in meta early in your beta.