<http://schema.org/topics>
"Buffy,Facebook,HTC,Mobile,Tech,Uncategorized"^^<http://www.w3.org/2001/XMLSchema#string>
<http://mashable.com/2011/11/22/will-the-htc-%E2%80%98buffy%E2%80%99-be-the-facebook-phone-we%E2%80%99ve-always-wanted-report/>