Apple’s App Store for iPhone and iPod Touch has served its one-billionth application, only nine months after the store opened. Last night Apple celebrated the milestone on its Web site, thanking customers for their support. The lucky App Store patron who downloaded the one billionth app will win a barrel of Apple loot from company. Apple also took the opportunity to brag about its success in the mobile ad marketplace and for driving massive amount of mobile Net traffic.

Apple started the official countdown two weeks ago to its one billionth app served. The company hasn’t announced who downloaded the billionth app yet. That person will win $10,000 in iTunes credit, a 17-inch MacBook Pro, a 32GB iPod touch, and an Apple Time Capsule.