Amazon will allow purchasers of its new Kindle Fire tablets to pay US$15 extra to turn off advertisements that are built into the devices. Reuters notes that Amazon initially said the tablets would come with ads known as "special offers" that appear when screens are locked and in the corner of the home screen, helping keep prices low. But criticism of the company mounted in online forums after reports that the company would not allow buyers to pay to block the ads as it had done with earlier tablets. Meanwhile a separate Reuters report notes that the new Kindle Fire HD tablet is yet to be approved for sale by US regulator the Federal Communications Commission (FCC). Amazon is accepting pre-orders now and plans to ship the 4G devices on November 20. A company spokeswoman said Amazon expects to receive FCC approval before November 20.