<http://schema.org/topics>
"Android,Apple,news,features,Gadgets,HP TouchPad,infographics,iPad,iPad 2,Mashable Infographics,Mobile,mobile devices,tablets,Tech,Motorola Xoom"^^<http://www.w3.org/2001/XMLSchema#string>
<http://mashable.com/2011/03/02/tablet-comparison-infographic/>