<http://schema.org/interactionType>
"http://schema.org/CommentAction"^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/apps/2013/05/02/angry-birds-friends-the-social-twist-on-rovios-hit-game-is-out-now-for-android-and-ios/?fromcat=all>