99.diff

-var events = _.clone(Backbone.Events);
-
 var Status = Backbone.Model.extend({
     url: '/status'
 });

-var Statuses = function() {
-};
-Statuses.prototype.add = function(text) {
-    var status = new Status();
-    status.save({ text: text }, {
-        success: function(model, data) {
-            events.trigger('status:add', data.text);
-        }
-    });
-};
+var Statuses = Backbone.Collection.extend({
+    add: function(text) {
+        var that = this;
+        var status = new Status();
+        status.save({ text: text }, {
+            success: function(model, data) {
+                that.trigger('add', data.text);
+            }
+        });
+    }
+});

 var NewStatusView = Backbone.View.extend({
     initialize: function(options) {
         this.statuses = options.statuses;

-        events.on('status:add', this.clearInput, this);
+        this.statuses.on('add', this.clearInput, this);

         var add = $.proxy(this.addStatus, this);
         this.$('form').submit(add);
     },

     addStatus: function(e) {
         e.preventDefault();

         this.statuses.add(this.$('textarea').val());
     },

     clearInput: function() {
         this.$('textarea').val('');
     }
 });

 var StatusesView = Backbone.View.extend({
     initialize: function(options) {
+        this.statuses = options.statuses;
+
-        events.on('status:add', this.appendStatus, this);
+        this.statuses.on('add', this.appendStatus, this);
     },

     appendStatus: function(text) {
         this.$('ul').append('<li>' + text + '</li>');
     }
 });

 $(document).ready(function() {
     var statuses = new Statuses();
     new NewStatusView({ el: $('#new-status'), statuses: statuses });
-    new StatusesView({ el: $('#statuses') });
+    new StatusesView({ el: $('#statuses'), statuses: statuses });
 });