<https://blog.keliweb.it/#/schema/person/image/>
<http://schema.org/contentUrl>
<https://secure.gravatar.com/avatar/bf40746d60282f84df9317e778750d15?s=96&d=wavatar&r=g>
<https://blog.keliweb.it/2014/09/visa-mastercard-e-american-express-a-braccetto-con-iphone-6/>