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I think that if they start selling books on the iTS, they will tout them as readable on the new fullscreen iPods, and the iPhone :)
 
i'm a big fan of ebooks and also think that apple could make a fabulous one, but i wouldn't think that this is in their plans (i don't think ebooks are quite mainstream enough yet). i agree with psychofreak that, if anything, they'd sell ebooks through itunes and they'd be readable on your mac or ipod.
 
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