J.K. Rowling does it again

I'm a huge J.K. Rowling fan -- both because her books are delightful and because she's brought so many children into the readers' fold -- so I was charmed to see that, even though her newest bookAmazon.com: Books: Harry Potter and the Half-Blood Prince (Book 6) is not going to be published for another 6 months, she's still number 1 at Amazon.