Twilight should have been topping the charts on the iTunes App Store books section... but it wasn't.

42 out of the top 50 books in the App Store were posted by a rogue developer named Thuat Nguyen who has now been thrown out of the app store all together. He may have shot to the top of the charts by virtually stealing the wallets of iTunes users around the world and buying his own books with the stolen accounts. According to engadget, Apple's response is:

The developer Thuat Nguyen and his apps were removed from the App Store for violating the developer Program License Agreement, including fraudulent purchase patterns. 

Developers do not receive any iTunes confidential customer data when an app is downloaded. 

If your credit card or iTunes password is stolen and used on iTunes we recommend that you contact your financial institution and inquire about canceling the card and issuing a chargeback for any unauthorized transactions. We also recommend that you change your iTunes account password immediately. For more information on best practices for password security visit http://www.apple.com/support/itunes. 

Read more on TheNextWeb, a British website that broke the story and helped me with mine: