gistfile1.js

// ==UserScript==
// @include http://delicious.com/tag/*
// ==/UserScript==

(function(w) {
	//Settings
	var POST_COUNT = 100; // 1-100
	var THRESHOLD = 2;

	var $ = function(id) { return $[id] || ( $[id] = document.getElementById(id) )}; 

	var tags = location.href.split("/")[4];
	w.listPeople = function(data) {		
		// count
		var people = {};
		var p;
		for(var i = 0, l = data.length; i < l; i++) {
			p = data[i]["a"];
			if(people[p] >= 1) {
				people[p]++;
			} else {
				people[p] = 1;
			}
		}
		
		var iul = $("people-list");
		iul.innerHTML = "";
		var count = 0;
		for(var t in people) {
			if(people[t] >= THRESHOLD) {
				var li = document.createElement("li");
				var a = document.createElement("a");
				a.className = "addTag";
				a.href = "/" + t + "/" + tags;
				var span = document.createElement("span");
				span.innerHTML = t + " :  " + people[t];
				a.appendChild(span);
				li.appendChild(a);
				iul.appendChild(li);
				count ++;
			}
		}
		$("c").innerHTML = count;
	}
	if(tags.split("+").length < 1) return;
	
	
	//make box
	var h = [
		'<div class="sidebar-list toggle on">',
			'<h3><span class="toggle-button no">People</span><em id="c">NaN</em></h3>',
			'<ul id="people-list" class="list">',
				'<li>loading</li>',
			'</ul>',
		'</div>'
	];
	$('sidebar').innerHTML += h.join("");
	
	var feed_url = "http://feeds.delicious.com/v2/json/tag/" + tags + "?callback=listPeople&amp;count=" + POST_COUNT
	
	//JSONP
	var script = document.createElement('script');
	script.type = "text/javascript";
	script.src = feed_url;
	document.body.appendChild(script);
})(this.unsafeWindow || window);