The Guerrilla Marketing Association is the small business marketing membership website of Jay Conrad Levinson.
I used to be a member and I recommended it to small business owners.
However at the time of updating this article (April 2013), Google is giving me a warning that "the site may harm your computer".
My advice is to be careful.
I haven't been a member for some years. I had gone through the old content and the new interviews spent too much time talking about how the experts had their new books written and published rather than helpful advice and ideas.
That said, there were some excellent interviews and the articles below give a small example of how varied the scope of them.