That means you're still just polling for data from the client as soon as you need any information from the server side. You're not pushing data to the display as you do in traditional GUI applications.

Well... I was talking about getting even deeper into AJAX... I mean, the Model would be implemented as Javascript objects, the controller as javascript objects and the view as javascript code glued to the form input elements... This way you would have the same type of communication of traditional GUI applications... where the server doesn't push data also...