tito-source.html

<script type="javascript">
  (function($){
    var params, source;
    params = function(name)  {
      name = name.replace(/[\[]/, "\\[").replace(/[\]]/, "\\]");
      var regex = new RegExp("[\\?&]" + name + "=([^&#]*)"),
          results = regex.exec(location.search);
      return results == null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
    }
    source = params('source')
    if(source != '')
    {
      $('a[href^="https://ti.to"]').each(function(index, item){
        url = $(item).attr('href') + '?source=' + source;
        $(item).attr('href', url);
      })
    }
  })(jQuery)
</script>

Good stuff! Just tweaked the script to work with the new beta.tito.io link. Are you going to add a new gist? Cheers