Even though there is an Amazon Kindle app for the iPad, one its limitations is that while you can download books, you cannot download newspapers and magazines. Just books. On the other hand, there are applications from the likes of The Wall Street Journal and The New York Times specifically for the iPad, and potentially more publishers will follow suit. Additionally, you can view those publications online using the iPad/Safari web browser, so one could argue that iPad users don't need newspapers from the Kindle store at all.