<http://schema.org/topics>
"Activision Blizzard,activisiona,bungie,news,Gaming,Halo,halo 2,halo 3,halo odst,halo reach,Mashable,Media,Microsoft"^^<http://www.w3.org/2001/XMLSchema#string>
<http://mashable.com/2010/04/29/bungie-activision-halo/>