"In the beginning was the review copy, and a man received it from the publisher. Then he wrote a review. Then he wrote a book which the publisher accepted and sent on to someone else as a review copy. The man who received it did likewise. This is how modern literature came into being." - Karl Kraus, as translated by Harry Zohn in Half-Truths and One-and-a-Half-Truths.
One of the revolutionary things about the internet, of course, is that it allows you to write the review without first receiving the review copy. We must wait to see the consequences for the rest of the cycle.