As a former Macintosh developer, I've always been disappointed with the user-interface of web pages. The state of the art of UI design moved backwards with the advent of the browser -- we traded connectivity for ease-of-use. With the advent of pages written in Flash, some better user-interfaces were created, but at the important cost of things like being able to copy text, have semantic and meta-data information imbedded in web pages, searchability, etc.