<https://wordpress.com/schema.org/author/5#personimage>
<http://schema.org/url>
<https://secure.gravatar.com/avatar/767fc9c115a1b989744c755db47feb60?s=96&d=retro&r=g>
<https://jetpack.com/blog/how-to-use-email-subscriptions-in-jetpack-1-2/?like_comment=957&_wpnonce=ca9a9c3a9c>