<http://schema.org/description>
"Google yesterday announced a controversial feature that brings Gmail and Google+ closer together. In short, if you use both services, anyone on Google+ can now email you without knowing ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/google/2014/01/10/stop-anyone-emailing-gmail-account-google/?_escaped_fragment_=rTK5m>