<https://samtuke.com/#/schema/person/image/>
<http://schema.org/contentUrl>
<https://secure.gravatar.com/avatar/c6610080039d3fbf9190ed376e244b5a?s=96&d=retro&r=r>
<https://samtuke.com/2014/02/fix-missing-maps-on-drupal-7-with-open-layers-and-ssl/>