<http://schema.org/description>
"Free language learning platform\u00A0Duolingo\u00A0has launched an updated version of its iOS app today, introducing a virtual store and a language coach, as it seeks to further engage its ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/apps/2013/12/12/duolingo-introduces-gamified-virtual-store-to-its-ios-app-to-keep-language-learners-engaged/>