<http://schema.org/image>
<http://rack.2.mshcdn.com/media/ZgkyMDEyLzEyLzA0L2U1L2dtYWlsdXNlcnN0LmFaay5qcGcKcAl0aHVtYgkxMjAweDYyNyMKZQlqcGc/fbba5ffa/a30/gmail-users-to-get-free-phone-calls-through-2011-62a13bdefb.jpg>
<http://mashable.com/2010/12/20/gmail-free-phone-calls/>