[START COPY BELOW]

// ==UserScript==
// @name         Surf
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Auto surf
// @author       Munem2x
// @match        http://bitssurfer.com/surf/browse
// @grant        none
// ==/UserScript==

$(document).ready(function(){
	setInterval(function(){
	if($(".green-text:not(:empty)")){
(function () {
  var ids = {};
  var found = false;
  $('[id]').each(function() {
    if (this.id && ids[this.id]) {
      found = true;
      console.warn('Duplicate ID #'+this.id);
	  dupid=this.id;
	  $('#'+dupid).click();
    }
    ids[this.id] = 1;
  });
  if (!found) console.log('No duplicate IDs found');
})();
}
  },10000);
});

[END COPY]

Guide link: http://cryptocurrencyman.blogspot.com/2017/03/bitssurfer-auto-surf-tricks.html