When I first heard of Ajax, I thought something was strange. I even bought a book on it which confirmed what I thought, that Ajax was just describing a way to use some browser request object in the way we have always been using an invisible iframe. Looking back at my old code, my first 'Ajax' library was written in 1998 when I had to convert a client/server app to the web and make it behave like a client/server app. Everyone thought I was crazy back then, I always had to point to the new Peapod grocery shopping site as confirmation that I wasn't doing something crazy.