<http://schema.org/topics>
"buddymedia,Facebook,Facebook Marketing Series,features,Free the Children,Kohl's Cares for Kids,Lists,Social Good,social good lists,stand up to cancer,Timberland Virtual Forest,Tyson Hunger Relief"^^<http://www.w3.org/2001/XMLSchema#string>
<http://mashable.com/2011/01/17/facebook-giving/>