<http://schema.org/description>
"Tumblr has really taking off as a great go-to platform that allows users to easily share their content online. It sits somewhere between Twitter and Blogging and it is accruing billions ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/socialmedia/2011/07/29/5-terrifically-brilliant-uses-of-tumblr/>