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Apple’s doing another iTunes countdown, this time to the 50 billionth app downloaded. Along with the chance to win a $10,000 iTunes gift card, Apple also greets you with the all time most downloaded free and paid apps. Some interesting notes:

The top paid and free iPad apps are somewhat surprising. The $10 Pages word processor (Content Creation!?!) and Microsoft’s Skype chat and conferencing:

Coolest facts IMO: Instagram jumps from #19 to #3; Google Maps and YouTube in top charts already; 15 out of 25 paid iPad apps are games.

— Federico Viticci (@viticci) May 2, 2013