Apple Inc. is going to give away a $10,000 iTunes gift card to the person who downloads the ten billionth song. They have a counter going at www.apple.com/itunes/10-billion-song-countdown/
and it’s currently at 9,922,742,132 and counting.
You have to be 13 years of age or older and a legal resident of a list of countries (check the official rules!). As with all contests, make sure you read the Official Rules thoroughly before entering!