They are more better than touchpads, but since hardly anybody sells laptops with nipples I always wind up w/ touchpads. One advantage touchpads have though is "zone tapping" (for example, tap upper left to middle click, tap buttom right to minimize, etc), but you'll have to desensitize your touchpad- default settings SUCK and I always wind up accidentally clicking something or dragging something if I don't lower the sensitivity.
What I really want is bluetooth keyboard with either a built in nipple or trackball- anyone know of one? Bluetooth trackballs themselves seem to be pretty scare, and bt combo keyboards (w/o touchpad) are really tough to find.