<http://schema.org/image>
<http://rack.3.mshcdn.com/media/ZgkyMDEyLzEyLzA0LzU4L3R3aXR0ZXJhZGRzLmRjMS5wbmcKcAl0aHVtYgkxMjAweDYyNyMKZQlqcGc/e8083a7c/861/twitter-adds-support-for-mms-photo-sharing-but-only-in-uk--19b74b7c1b.jpg>
<http://mashable.com/2009/11/16/twitter-mms-support/>