<http://schema.org/description>
"As an expert in your niche, you get all kinds of special treatment from others that respect you and acknowledge your experience and wisdom in your area of specialty.\r\n\r\nAs an expert, ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/socialmedia/2011/04/11/how-to-position-yourself-as-an-expert-and-get-press/>