<http://schema.org/description>
"Mobile advertising firm Millennial Media this morning released its 'Mobile Mix' report covering its findings for the first quarter of this year. The report looks at trends in ad impressions ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/mobile/2012/05/24/millennial-tablets-account-for-20-of-mobile-ad-impressions-android-has-49-share/>