Hi Marcus, I've used these on ecommerce sites before (in fact QAS) and I personally feel they can be implemented to improve the speed, usability, and simplify the form completion.
A user filling out the form wouldn't necessarily have to completed the entire form as you could ask just for house name and postcode, then doing an AJAX request to return the rest of the fields ultimately speeding up the process. You could also add auto-complete to the form fields to make it even quicker. It also means the address will (very very) rarely be incorrect as the data is coming from a respected source and isn't liable to human input error. If you are worried about doing the address checking through JavaScript you could always do this on form submit and return a friendly error page letting the user know the address is incorrect. As with all form questions the Luke Wroblewski PDF is always worth a look. http://www.lukew.com/resources/articles/WebForms_LukeW.pdf Cheers G . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Posted from the new ixda.org http://www.ixda.org/discuss?post=49422 ________________________________________________________________ Welcome to the Interaction Design Association (IxDA)! To post to this list ....... disc...@ixda.org Unsubscribe ................ http://www.ixda.org/unsubscribe List Guidelines ............ http://www.ixda.org/guidelines List Help .................. http://www.ixda.org/help