'Harry Potter' books are still flying off the shelves with 500 million copies sold Ifeadi C. 00:28 Mashable, Zero Tech Blog Share this Share on FacebookTweet on TwitterPlus on Google+ Related PostsSteve Carell, Jennifer Aniston share details on new show for Apple TV+Apple Pay is coming to major US transit systems this yearClever dog uses crystal ball to see the front sidewalk, and maybe the future5 facts 'The Inventor' left out about Elizabeth HolmesOprah made Tim Cook cryApple's new credit card gets compared to Billy McFarland's credit card scam