There are 5 previous versions of this script.
// ==UserScript==
// @name SA Forums: One Sig Per Person
// @namespace meta.ironi.st
// @description Limits the display of signatures to one sig per person per page
// @include http://forums.somethingawful.com/showthread.php*
// @author Nigglypuff
// ==/UserScript==
(function () {
var sigs = document.querySelectorAll('p.signature, p.signature~*'),
seen = {}, html;
for (var sig, i = 0; sig = sigs[i++];) {
if (seen[sig.innerHTML]) sig.style.display = 'none';
else seen[sig.innerHTML] = true;
}
if (location.hash) location = location.hash;
})();
