Funny thing... I didn't recognize his name, but the first book of his Axis of Time series was available for free when I got my first Kindle. This can be a great way to introduce people to an author or series, and I've bought books by an author based on the free one I got.
Unfortunately for Birmingham, Weapons of Choice just didn't convince me he was a great author, or at least not one that I want to spend more money on right now. Of course, I haven't pirated his books either, but the only reason I've ever done that is if the book isn't legally available electronically.
http://en.wikipedia.org/wiki/John_Birmingham