<http://schema.org/description>
"A few years ago, it was not uncommon to hear search people talk about The Dark Web (also known as Dark Net or the Deep Web). \u00A0Basically, the Dark Web is  made up pages or files that ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/location/2011/04/06/the-unlit-social-graph/>