// ==UserScript==
// @name        Reddit - Old layout
// @namespace   reddit-old
// @description Always replace reddit.com pages with their old.reddit.com counterpart
// @include     http://www.reddit.com/*
// @include     https://www.reddit.com/*
// @version     1.0
// @grant       none
// @run-at      document-start
// ==/UserScript==

window.stop()
window.location.href = window.location.href.replace("www.reddit.com","old.reddit.com")