<http://schema.org/topics>
"apps,Apps and Software,features,gallery,Lifestyle,Living Mobile,Mobile,Motorola,Tech,Travel,Travel &amp; Leisure,Uncategorized,Work &amp;amp; Play"^^<http://www.w3.org/2001/XMLSchema#string>
<http://mashable.com/2013/03/06/apps-for-downtime/>