<http://schema.org/description>
"If you are a Dropbox user, you are acutely aware of the number of content links that your friends, family, and coworkers will send you. It can become confusing. Happily,Dropbox has ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/insider/2013/03/28/dropbox-adds-ability-to-track-all-content-you-have-viewed-on-its-cloud-storage-service/>