Watching how Amazon makes its recommendations is a sport in itself:
Working with Texts: A Core Book for Language Analysis (Intertext S.)
by Ronald Carter, et al.
Recommended because you added The Bloody Chamber and Other Stories to your Shopping Basket
The Birth of Tragedy: Out of the Spirit of Music (Penguin Classics S.)
by Friedrich Nietzsche, Shaun Whiteside (transl)
Recommended because you rated The Crying of Lot 49