Yes, it is technically inaccurate for people to view the back button as an undo. However until new browsers come out that are designed for web applications, thi

Yes, it is technically inaccurate for people to view the back button as an undo. However until new browsers come out that are designed for web applications, this will continue to be an issue regardless. As long as you judiciously use AJAX - only use it to power a true 'app' - you may largely overcome the issue, as people who feel they're working in an application may not be as inclined to hit back when trying to undo.