<http://schema.org/image>
<http://rack.2.mshcdn.com/media/ZgkyMDEyLzEyLzA0LzM5L2hvd3RvZ2V0dGhlLmF6ZS5qcGcKcAl0aHVtYgkxMjAweDYyNyMKZQlqcGc/870442e1/f5c/how-to-get-the-most-out-of-q-a-sites-bf52c4acbb.jpg>
<http://mashable.com/2010/07/08/how-to-question-answer-sites/>