That actually doesn't look good, is confusing as to what it even means, and still takes up a lot of space (or do we deal with weird user interaction/confusion when the scroll tab is covering user content? If the sensitive area is wider, how do you click through to app content within it? EDIT: and for us who have used Maemo pre-5.0, finger scrollbars take up a lot of space, and that is on a larger screen.