<https://secure.gravatar.com/avatar/66051a6540dc247c8e21c6e0c019d24e?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://iwebmob.com/how-to-make-banner-advertising-online-stand-out/>