I've had word from the author that two of the giveaway books have been sent (the third has an elaborate personalization request and will take a bit longer - the winner is compiling a 'Viking Amoeba Army' of author signatures/pictures, which I think is pretty cool). Alas, Joe did not respond, so I emailed the runner-up, Patty N., who will be getting one of the books instead.
And if you're interested in chatting with the author, he's doing a Q&A on Goodreads here.
Once I finish my current book, I'll finally have time to read Element Zero. Can't wait!