I'm thinking about adding an iAd banner in one of my free apps. Is actually really simple and Apple has done a great job including this feature in the sdk. But my question is: Will you add iAd in your app even if this means that users need iOs 4 installed to use your product? Will you put yourself out of a big slice of the App Store market to get the iAd benefits? I think I'm gonna wait a bit... and you? what do you think? M.