How do you get out of a dialog on the iPad? You just touch the main screen behind it. (Took me a while to figure out as a Windows user.) Seems like lots of web apps are taking up this paradigm. You can still hit escape as we Windows users are used to, but you can also just click on the back webpage that presented the dialog. Apple has brought the touch interface to the desktop in other ways. I heard a recent release of Mac OS reversed the mouse wheel scroll direction so that you’d think of it as a touch interface. You are dragging the screen down…not scrolling a scroll bar up. Weird things to get used to, but perhaps more intuitive?