<http://schema.org/topics>
"automattic,blogging,Business,Business Lists,news,features,interviews,Mashable,matt mullenweg,open source,Programming and Web Development Lists,Social Media,Social Network Lists,Web Apps,web development,WordPress"^^<http://www.w3.org/2001/XMLSchema#string>
<http://mashable.com/2010/10/20/matt-mullenweg-wordpress-interview/>