<http://schema.org/description>
"When we first wrote about PowerInbox a few months ago, I was impressed by how the company was attempting to make email do more than just send messages back and forth. By custom-coding ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/apps/2012/02/08/powerinbox-launches-a-massive-api-letting-anyone-add-apps-to-their-emails/>