I'm not a programmer, so I have no idea what lead me to O'Reilly's Radar article on improving pull-downs, checkboxes and radio buttons in online forms with some ajax wonder called sliders was supposed to make entering city and state information easier, but I wondered why any site even asks for it if the ZIP Code is already known. Can a ZIP Code cover more than one city? Why not simply eliminate the fields altogether and save everyone some time? Simplifying forms is just as important as improving the user interface, I suspect.
