<http://schema.org/description>
"Chances are that you don't remember that Yahoo used to have a display ad network. If you happen to, I'm willing to bet that you're in a very small minority of Internet users who do. ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/insider/2012/09/27/yahoo-partners-media-net-take-shot-google-display-ad-market/>