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iAd allows your application to earn revenue by displaying advertisements to the user. Your application dedicates a portion of its user interface to display advertisements and in turn you receive revenue when users view or click those advertisements.
While you are developing your application, iAd sends test advertisements to help you verify your implementation is correct. To receive advertisements from iAd in a release application, you need to select the advertising network option for your application before publishing it.
© 2011 Apple Inc. All Rights Reserved. (Last updated: 2011-01-05)