[Modify] Polish it

Example3/Echo.cs

@@ -8,8 +8,7 @@ namespace Example3
   {
     protected override void OnMessage (MessageEventArgs e)
     {
-      var name = Context.QueryString["name"];
-      Send (!name.IsNullOrEmpty () ? String.Format ("\"{0}\" to {1}", e.Data, name) : e.Data);
+      Send (e.Data);
     }
   }
 }