<http://schema.org/topics>
"app store (iOS) ,Apple,apps,news,ComScore,design,features,HTML5,iPhone,Lists,Mobile,Mobile Lists,mobile web,safari,taptu,web 2.0,Web Apps,whitepages"^^<http://www.w3.org/2001/XMLSchema#string>
<http://mashable.com/2010/06/10/why-you-may-not-need-a-mobile-app/>