<http://schema.org/about>
"You may have a credit in your Kindle account from a legal settlement that you probably didn't realize you were a part of. Time for a book shopping spree."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/money/personal-finance/blogs/5-kindle-books-under-4-to-buy-with-your-ebooks-antitrust-settlement>