Actually, one advantage of trackpads over the center-mounted pointers is that you can perform gestures using a trackpad. Two fingers to scroll, pinch to zoom, s

Actually, one advantage of trackpads over the center-mounted pointers is that you can perform gestures using a trackpad. Two fingers to scroll, pinch to zoom, slide between desktops, etc. etc. You could use keyboard shortcuts for those, but when I'm Web browsing I rather enjoy using the scroll/zoom gestures on my Macbook's trackpad.