<http://schema.org/description>
"Tumblr's first official Sponsor products are now available to advertisers, the micro-blogging platform has\u00A0announced. As of today, brands can now get featured in Tumblr Radar and Spotlight.\r\n\r\nBoth ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/socialmedia/2012/05/02/tumblr-jumps-into-advertising-head-first-with-sponsor-products/>