Googleアカウントにログインしていないと動作しなかった問題を修正した。また、コードを書き直した。AutoPagerize 0.0.58(GM)・0.6.6(Fx)・0.2.7(Cr)、AutoPatchWork 1.8.1に対応。Firefox 3.6.13(Greasemonkey 0.9.1)、Chrome 9.0.597.98で動作を確認した。

googlefilter.user.js

// ==UserScript==
// @name          Google Filter
// @namespace     hirak99
// @description   Filters out search entries from specific sites from Google
// @include       http://www.google.com/search*
// @include       http://www.google.co.jp/search*
// @include       http://www.google.co.uk/search*
// @include       http://www.google.co.in/search*
// @version       2.0 - fixed for new google on 25 Oct, 2009
// ==/UserScript==
// 2.15.2011 modified for autopagerize by fuba

var f = [
'www\.unkar\.org/',
'unkar\.org/',
'2ch\.net/'
], l = f.length, b = [], d = document, e = d.createElement('div'), i = d.getElementById('ires'), t, c;

function toggleDisplay(a) {
  i = b.length;
  a && (t = !t);
  if (i) {
    e.textContent = '('+ i + ' item' + (~-i ? 's' : '') + ' filtered out by Google Filter - Click to ' + (t ? 'hide' : 'show') + ')';
    if (t) while (i) b[--i].style.cssText = 'background-color: #E0E0E0;';
    else while (i) b[--i].style.cssText = 'display: none;';
  }
}

function googleFilter(a) {
  var x = a.getElementsByClassName('l'),
      s = x.length,
      g = a.getElementsByClassName('g');

  while (s) {
    for (i = l, c = x[--s].href; i;) {
      if (~c.search(f[--i])) {
        b.push(g[s]);
        break;
      }
    }
  }

  toggleDisplay();
}

i.insertBefore(e, i.firstChild);
e.style.cssText = 'font-size: x-small; color: #7070FF;';

googleFilter(i);

e.addEventListener('click', function () {
  toggleDisplay(1);
}, false);

addEventListener('AutoPagerize_DOMNodeInserted', function (e) {
  googleFilter(e.target);
}, false);

addEventListener('AutoPatchWork.DOMNodeInserted', function (e) {
  googleFilter(e.target);
});