<http://schema.org/description>
"Twitter today announced it will soon start experimenting with making its ads &amp;quot;more useful&amp;quot; to US users by letting its partners target them more directly. The company says ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/twitter/2013/07/03/twitter-will-soon-target-ads-based-on-browser-cookies-and-hashed-email-addresses-from-ad-partners/>