<http://schema.org/interactionType>
"http://schema.org/ShareAction"^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/facebook/2012/11/06/facebook-for-ios-version-5-1-causes-news-feed-and-login-issues-may-not-displa-your-friends-and-groups/>