<http://schema.org/topics>
"Apps and Software,Business,features,Features Week In Review,Gadgets,Home,Lifestyles,Marketing,Mobile,Social Media,Tech,Travel,Travel &amp; Leisure,Uncategorized"^^<http://www.w3.org/2001/XMLSchema#string>
<http://mashable.com/2012/12/08/digital-media-resources-63/>