Somehow I missed Jim C. Hines' publication of the novel survey results part II wherein he tackles the myth of the "overnight success" and "you have to know someone." Both myths -- BUSTED. Check out the results!
Here also is novel survey results part III in which he asks the question: "Can you boost your odds?" of being published by attending conventions, being in a writers group, having an advanced degree in creative writing, etc. The answer to this one is less clear, but interesting reading, none-the-less.