What's funny about that particular link is related to my comment about online serials. After their publisher went under they did the original version of Fledgling as a donation based serial on their web site, and I bet a bunch of the oldest reviews for it are from people who donated for it then bought the hardcover when they signed with Baen and it was re-edited and published.

Those would be the loyal readers who go to authors' websites looking for news and new releases.