my current default.js

default.js

(function() {
  window.dotjs = {

    // add websites you think are crap.
    bad: [
      /newsbomb.gr/,
      /zougla.gr/,
      /newsbeast.gr/
    ],

    // replace them with "good" ones.
    good: [
      'http://butdoesitfloat.com',
      'http://ubu.com',
      'http://cargocollective.com/',
      'http://fastcodesign.com/',
      'http://fffff.at/'
    ],

    helpers: {
      replaceBadWithGood: function replaceBadWithGood() {
        var
            links,
            current_link,
            link_count,
            i = 0,
            j,
            bad_count = dotjs.bad.length,
            good_length = dotjs.good.length,
            replace = function() {
              var el = $(this);
              el.attr('href', dotjs.good[Math.floor(Math.random() * good_length)]);
              el.removeAttr('onmouseover');
              el.removeAttr('data-ft');
            };


        $('.shareMediaLink, .shareText').attr('onmouseover', '')
                                        .attr('onclick', '');


        links = document.getElementsByTagName('a');
        link_count = links.length;
        //console.log('links: ' + links.length);


        for (i; i < link_count; i++) {
          current_link = links[i];


          for (j = 0; j < bad_count; j++) {
            if (current_link.href.match(dotjs.bad[j])) {
              current_link.href = dotjs.good[Math.floor(Math.random() * good_length)];
              current_link.onmouseover = "";
            }
          }
        }
      }
    }
  };


})();


$(function() {
  window.dotjs.helpers.replaceBadWithGood();
});