Wirelessly posted (Mozilla/5.0 (iPod; U; CPU iPhone OS 4_3_3 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8J2 Safari/6533.18.5)
It doesnt really make sense, because other mouses scroll by notches, so if you reach the bottom there is no inertia which would carry you past the page, hence no rubber band effect.