The e-book versions of the Harry Potter series are being released through Pottermore, and J.K. Rowling has chosen to do a number of interesting things with them, including releasing them without DRM restrictions. 'One of the encouraging things about the Pottermore launch is that the books will be available on virtually every platform simultaneously, including the Sony Reader, the Nook, the Kindle and Google's e-book service. ... even Amazon has bowed to the power of the series and done what would previously have seemed unthinkable: it sends users who come to the titles on Amazon to Pottermore to finish the transaction.