<http://schema.org/description>
"Google's Offers platform launched with a pilot scheme in Portland, Oregon, following its announcement at the Google Wallet event in late May. Now it's being rolled out further, with ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/google/2011/07/12/google-rolls-out-offers-to-new-york-and-san-francisco-updates-shopper-android-app/>