<http://schema.org/interactionType>
"http://schema.org/CommentAction"^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/apps/2011/04/18/zurb-brings-even-more-features-to-its-notable-markup-app/screen-shot-2011-04-18-at-12-33-07-pm/>