<http://schema.org/description>
"I'm sure I'm not alone, but I've never really understood the Facebook poke. The attempt to get someone's attention by virtually jabbing your finger in their side or arm, or wherever ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/shareables/2012/03/21/when-your-friends-poke-you-on-facebook-this-machine-will-poke-you-in-real-life/>