Apple has announced it will award a $10,000 iTunes Gift Card to the customer who purchases the 10 billionth song on iTunes. Not surprisingly with such a large reward, the list of rules is long and labyrinthine, but entering is as easy as purchasing a song. With roughly 9,913,000,000 songs already downloaded, and the current purchase rate being about 150 songs per second (there's a nifty counter on Apple's site), the winning purchase should happen soon! follow link
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iTunes's 10 Billionth Song Contest