<http://schema.org/interactionType>
"http://schema.org/ShareAction"^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/facebook/2013/04/16/facebook-for-ios-gets-chat-heads-stickers-and-revamped-news-feed-while-home-for-android-rolls-out-globally/>