<http://schema.org/url>
<http://thenextweb.com/apple/2011/01/07/apples-mac-store-receipt-check-is-an-open-door-to-app-piracy/>
<http://thenextweb.com/apple/2011/01/07/apples-mac-store-receipt-check-is-an-open-door-to-app-piracy/>