<http://schema.org/alternativeHeadline>
"Dropbox adds \u2018from others\u2019 tab to track all of the shared links you\u2019ve clicked on"^^<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/>