old_contents: // ==UserScript==
  // @name        QQ音乐 online scrobbler
  // @namespace   http://gmscrobber.whosemind.net
  // @description 记录qq在线音乐到 last.fm
  // @match       http://y.qq.com/*
  // @require     https://raw.github.com/justan/gmscrobber/master/simple_scrobbler_user.js
  // @version     0.0.1
  // ==/UserScript==
  
  var init = function(){
    log('init');
  };
  
  var scrobber = new Scrobbler({
    name: 'QQ 音乐',
    ready: init
  });
new_contents: // ==UserScript==
  // @name        QQ音乐 online scrobbler
  // @namespace   http://gmscrobber.whosemind.net
  // @description 记录qq在线音乐到 last.fm
  // @match       http://y.qq.com/*
  // @exclude     http://y.qq.com/y/static/index.html
  // @require     https://raw.github.com/justan/gmscrobber/master/simple_scrobbler_user.js
  // @version     0.0.1
  // ==/UserScript==
  
  var init = function(){
    log('init');
  };
  
  var scrobber = new Scrobbler({
    name: 'QQ 音乐',
    ready: init
  });
subject: 排除多余的 iframe 保证只初始化一次