(function($) {

  var authors = {
    "weppos": "Simone Carletti",
    "designabile": "Francesco Improta",
    "nobody": "Nobody"
  };

  $(function() {
    $("span.author").each(function() {
      author = this.innerHTML;
      this.innerHTML = this.innerHTML.replace(author, authors[author] || author);
    });
  });

})(jQuery);