<http://schema.org/topics>
"banking,Business,card 2.0,citibank,credit cards,Dynamics,Gadgets,Mashable,personal finance,Tech"^^<http://www.w3.org/2001/XMLSchema#string>
<http://mashable.com/2010/10/22/citibank-first-to-test-revolutionary-credit-card-system-card-2-0/>