<http://schema.org/description>
"I'm a fan of using hashtags all over the web.  I've been known to even use them in text messages and in real life conversations.  Yes, it's sad, but the emergence of the hashtag has ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/apps/2012/06/11/tagsinaction-is-the-perfect-way-to-track-a-hashtag-all-over-the-web/>