A billion ain't what it used to be; heck, these days, major corporations are losing tens of billions of dollars left and right. But in the rarefied world of the iPhone, nearly a billion apps downloaded (onto over 17 million iPhones, no less) still counts for something.
And that's what Apple's doing here: counting down until the billionth app is downloaded. And when you download an app between now and the magic 1,000,000, you'll be entered into a contest to win a $10,000 iTunes Gift Card, an iPod touch, a Time Capsule, and a MacBook Pro. (Still don't have an iPhone yet? Me neither. But you can still enter the contest…)