<https://secure.gravatar.com/avatar/3e0d5332cdadf9a62ab4c753f2c9df0e?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://marketingtechonline.com/blog/why-should-your-business-care-about-seo/>