Edit in JSFiddle

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(function(d){
  var f = d.getElementsByTagName('SCRIPT')[0], p = d.createElement('SCRIPT');
  p.type = 'text/javascript';
  p.setAttribute('data-pin-hover', true);
  p.async = true;
  p.src = 'https://sites.google.com/site/multfocosjavascript/gadgets-e-widgets/pinit.js';
  f.parentNode.insertBefore(p, f);
}(document));
</script>
<span style="font-size: 80%; float:right;">Adquira este <a href="http://mult-focos.blogspot.com/2014/09/pinos-recentes.html" target="_blank">widget</a></span>
<a data-pin-do="embedUser" href="http://pinterest.com/USUÁRIO /pins/"></a>

<script type="text/javascript">
(function(d){
  var f = d.getElementsByTagName('SCRIPT')[0], p = d.createElement('SCRIPT');
  p.type = 'text/javascript';
  p.setAttribute('data-pin-hover', true);
  p.async = true;
  p.src = 'https://sites.google.com/site/multfocosjavascript/gadgets-e-widgets/pinit.js';
  f.parentNode.insertBefore(p, f);
}(document));
</script>

<a data-pin-do="embedUser" href="http://pinterest.com/multfocos/pins/"></a>