<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/InteractionCounter>
<http://thenextweb.com/apps/2011/11/15/google-voice-for-android-now-has-offline-voicemail-and-group-texting/?awesm=tnw.to_1BqvV>