<http://schema.org/description>
"Sometimes you want to &amp;quot;dislike&amp;quot; something on Facebook.  Something sad, or something stupid.  The &amp;quot;Like&amp;quot; button forces you to interact in one way only, otherwise ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/google/2011/12/07/add-a-1-button-to-google-with-this-chrome-and-firefox-extension/>