Capitalizing on Oprah Winfrey's huge role recommending books to her fans, the iPad edition of O, The Oprah Magazine, that's expected in the fourth quarter will let users buy e-books and read them within the app itself. The app preserve the basic magazine experience but include visual tags that let users know they can see a video message from Ms. Winfrey or interact in some other way. A module on articles will let users make comments and see other readers' remarks.
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