Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Kindle version: UGLY -- do NOT bother!

The equations are rendered as low-contrast images and are for the most part unreadable, even on a Kindle DX. Inline equations and symbols are rendered the same way and are sized in a ridiculous way, destroying the flow of the text and even making it hard to decipher in many places. The Landau and Lifshitz theoretical physics series of books are beautiful and for content they all unreservedly deserve six stars on a five-star scale. However, as with all older physics and mathematics books, it seems, the e-book rendering is a horrible mangling. DO NOT buy the Kindle version or, like me, you *will* be sorry and have to return it. Stick with dead-tree on these.