<http://www.datamediahub.it/2011/02/13/il-valore-dei-blog-dellhuffington-post/#primaryimage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.datamediahub.it/2011/02/13/il-valore-dei-blog-dellhuffington-post/>