<http://schema.org/image>
<http://rack.0.mshcdn.com/media/ZgkyMDEzLzA5LzE2L2RhL2lwaG9uZWltZXNzLmYxOGJhLmpwZwpwCXRodW1iCTEyMDB4NjI3IwplCWpwZw/6dacc30f/921/iphone-imessage-chat.jpg>
<http://mashable.com/2013/09/16/imessage-problem/>