<http://schema.org/image>
<http://rack.2.mshcdn.com/media/ZgkyMDEzLzAyLzI4LzRkL0dyb3Vwb24uOTA5YmEuanBnCnAJdGh1bWIJMTIwMHg2MjcjCmUJanBn/626f2e16/b09/Groupon.jpg>
<http://mashable.com/2013/02/27/groupon-down-27-percent/>