10 - 500,000 downloads for specific app in US iTunes Store

I need someone who have the resources to download my iphone application 10,000 - 500,000 times. Each download must have a different iTunes account from US iTunes App Store. How many downloads you can do, and within how many days? Side note: I would also be interested in developing/buying existing software that can automatically create unlimited email accounts and use them for iTunes account creation and downloading of the targeted free app. Any notes, ideas are welcome.