The paperback edition of Harry Potter and the Half-Blood Prince was released today in the United States. Save yourself a journey to the bookstore by purchasing it online at Amazon for only $9.99. USA Today reports an initial print-run of two million copies and says that if this book follows the same pattern as the first five, it should reach #1 on the bestsellers list.

In the first editions of Half-Blood Prince, an error discovered in "An Excess of Phlegm" stated that Hermione received one Exceeds Expectations and ten Outstanding grades in her OWLs. However, she only took ten subjects. Our Potter Encyclopedia had staggered a guess that she took the "Muggle Studies exam and passed it with top marks despite dropping the subject at the end of her third year." Now, HarryLatino.com reports that this was indeed a genuine error and has been rectified in recent editions of Book 6; it now reads she earned nine Os and one EE. Phew!

The American Library Association is asking teens to vote this week for their three favorite books, with ALA subsequently posting the top 10. Half-Blood Prince is among those nominated, and you can vote here. Thanks to Kelly for the tip!

Jo Rowling recently donated a new, autographed copy of Half-Blood Prince to the Helen Ritson Trust Fund, a charity that benefits underprivileged children. You can now bid for the book on eBay, but note that the auction will close in three days.

As we reported last month, the American Library Association asked teen readers to vote for their favorite book as part of Teen Read Week. The Association has now announced the winners, and, no doubt due to MuggleNetters voting, Half-Blood Prince topped the top-ten list!