Well, Duffy has exposure at amazon, barnes and noble, ingram (according to an email I was forwarded); he does indeed feel like a legitimate paper product packaged as a novel and intent on blowing your entire worldview to the Southern hemisphere and back because the laughs are so long and the writing so fucking good. At least in a few paragraphs.
Here is the most direct route to Duffleman as of September 1, 2010:
Feel free to spread the URL if it's tax-free in your state. And, of course, until next time, Fight for Your Long Day!