<http://schema.org/topics>
"Apple,news,Facebook,features,Google,Hewlett-Packard,Lists,Maps Lists,Microsoft,pop culture,retro gaming,Silicon Valley,Social Media,Tech,Travel Lists,Twitter,web design"^^<http://www.w3.org/2001/XMLSchema#string>
<http://mashable.com/2010/06/20/tech-tourism-destinations/>