The books are pretty nifty. (One of 'em is an anthology with a contribution from yours truly.) It's a bit Australian-oriented in terms of ability to enter -- calls for an Australian postal address, which I think is a bit rough on our Kiwi compatriots at the very least -- but if an Oz postal address is the only requirement... well, how difficult can it be to come to an accommodation with a friendly Australian?
Free books and a bit of fun. What else could you possibly want?