Apple has begun allowing iPhone developers whose iPhone applications have been released on the App Store to hand out up to 50 promotional codes good for a free download of the applicaiton. The codes are currently only redeemable through the iTunes Store in the U.S., by using the “Redeem” link in the App Store. As an example, Sykhronics Entertainment provided iLounge with a promotional copy of its new game Smiles. Prior to the start of…