FIXED: Flame on! A beginner's guide to Ember.js

app.js

	App.recentUsersController = Em.ArrayController.create({
		content: [],
		addUser: function(name) {
			if ( this.contains(name) ) {
				this.removeObject(name);
			}
			this.pushObject(name);
		},
		removeUser: function(event){
			this.removeObject(event.context);
		},
		searchAgain: function(event){
			App.tweetsController.set('username', event.context);
			App.tweetsController.loadTweets();
		},
		reverse: function(){
			return this.toArray().reverse();
		}.property('@each')
	});

index.html

                <h3>Recent Users</h3>
                <ol>
                    {{#each user in App.recentUsersController.reverse}}
                        <li>
                            <a href="#" title="view again" {{action "searchAgain" "user" target="App.recentUsersController"}}>{{user}}</a> - 
                            <a href="#" title="remove" {{action "removeUser" "user" target="App.recentUsersController"}}>X</a>
                        </li>
                    {{/each}}
                </ol>