future.user.js

//==UserScript==
// @name            Future
// @namespace       http://antimatter15.com
// @description     lets the future represent the next page
// @include         http://*
// @include         https://*
//==/UserScript==

var linkel = {}, links = [].slice.call(document.getElementsByTagName("a"),0)
  .filter(function(e){return /^[0-9]+$/.test(e.innerText.replace(/\s /g,''))})
  .map(function(e){var num=parseInt(e.innerText);linkel[num]=e;return num});
    
function next_page(){
  var last = 0;
  for(var i = 0; i < links.length; i++){
    //likely layout: ascending 1,4,5,6,8,9,10,126
    //measure change:          0,3,1,1,2,1,1 ,136
    //get first =2:            <,>,<,<,*,<,< ,>
    if(links[i] - last == 2){
      //current page:     links[i] -1
      //next page:        links[i]
      //next page link:   linkel[links[i]].href
      //alert(links[i] - 1);
      window.location = linkel[links[i]].href;
      
      break; //bah beh
    }
    last = links[i];
  }
}
if(links.length > 0){
  history.pushState('_xPageNav', 'Next Page');
  history.go(-1);
  window.onpopstate = function(e){
    if(e.state == '_xPageNav')
      next_page();
  }
}