<http://schema.org/topics>
"Business,Celebrities,choicevendor,Facebook,First to Know,linkedin,mark zuckerberg,news,Social Media,Steve Jobs,Twitter,Web Apps"^^<http://www.w3.org/2001/XMLSchema#string>
<http://mashable.com/2010/09/23/top-3-stories-in-social-media-and-business-this-morning/>