Sometime this evening, some lucky person downloaded the 25 billionth app from the App Store. The graphic you see above showed up between midnight and 1 AM ET, although I wasn't able to capture the exact time. If you're the winner of Apple's US$10,000 App Store credit, we'd love to talk to you. The rest of you? Tell us what you downloaded from the App Store to enter Apple's commemorative giveaway. My pick? It was Paper Karma, an app to reduce the amount of junk mail you get.