JK Rowling's Pottermore opens to beta users, but how can you get in?

Potential beta users around the world are frantically refreshing and trying to get into Pottermore. Pottermore opens to registration this week, but only if you solve the riddle.
August 1st, 2011 - Just when you thought that the book on Harry Potter was closed forever, JK Rowling's Pottermore has opened up to beta testing. What can only be described as an online attraction  fo

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