<http://schema.org/image>
<http://rack.2.mshcdn.com/media/ZgkyMDEyLzEyLzA0L2RmL2dvb2dsZWNhbGVuLmRTdS5naWYKcAl0aHVtYgkxMjAweDYyNyMKZQlqcGc/fbf96e3d/7cc/google-calendar-adds-tasks-could-be-better-41680409bc.jpg>
<http://mashable.com/2009/05/13/google-calendar-tasks/>