<http://schema.org/topics>
"Desktop App Lists,documents,google docs,How To,iPhone,Lists,microsoft office,Syncplicity,ThinkFree Office,web,web 2.0,Web Apps,Zoho"^^<http://www.w3.org/2001/XMLSchema#string>
<http://mashable.com/2008/11/07/how-to-use-web-based-office-tools-offline/>