Surely you remember the Entourage Edge, the dual-screened, Android-powered tablet/netbook that we concluded just wasn't worth your time -- nor your $500, at least. That said, you may not have heard of Cengage Learning, but they're a massive publishing conglomeration that prints everything from Chilton auto manuals to those giant hair style books found at salons and full of Zoolander rejects doing their best Magnum impression. Between those literary extremes falls a whole raft of textbooks, content that these two companies will start sharing in time for the fall semester, helping to boost the