<http://schema.org/description>
"Who says print is dead? With its new Kindle MatchBook service, Amazon is looking to offer a carrot to customers who purchase physical books by letting them purchase the Kindle version for free or at a..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.laptopmag.com/articles/amazon-matchbook-offers-discounted-kindle-versions-of-print-books>