like-them-all.js

// paste it in your browsers console while surfing on facebook and you will like all things

(function (){
  var d = [],
    i = 0, 
    l = 0, 
    li = setInterval(function() { 

      if (i < l) { 
        console.log('like ' + i + ' out of ' + l); 
        d[i].onclick();
        i++;    
      }
      else {
        setTimeout(function() { 
          window.scroll(0, window.pageYOffset + 100); 
        }, 500); 
      }
    },400),
    f = function() {
      var d2 = document.getElementsByClassName('UFILikeLink'); 
      for(var di = 0, dl = d2.length; di < dl; di++) {
        if (d2[di]['title'].indexOf('unlike') == -1) {
          d.push(d2[di]);
        }
      }
      l = d.length;
    },
    si = setTimeout(f, 0); 
    
  window.onscroll = function() {
    clearTimeout(si); 
    si = setTimeout(f, 1000); 
  }
})();

Change if (d2[di]['title'].indexOf('unlike') == -1) to if (d2[di]['title'].indexOf('unlike') == 0) to unlike them all :D