Jeff-
If you leave a comment and it's on topic to an article or about a general situation, most authors (myself included) will generally answer it. If a comment seems like it'd make for a good article, we may feature it in an article (and I'll use both emails we receive from guys using the contact form and comments from guys commenting on articles for this personally).
Some of us, like Hector, Drexel, and myself, also respond to posts on the boards, and there are other talented guys on the boards as well who don't write articles but are absolutely experts.
If you have questions about a specific girl, we recommend either make a post here on the General board or write a report about her on the Field Reports board and wait for feedback, or sign up for phone coaching and a coach can walk you through it.
So, it depends on what your question is.
Chase