(Almost) Never Add a Reset Button to a Form
http://www.456bereastreet.com/archive/200909/almost_never_add_a_reset_button_to_a_form/

456 Berea Street
2009

Abstract:

Next time you consider adding a reset button to a form, think it through very carefully first. Does the user really benefit from being able to reset the form? Is being able to reset the form to its initial state so valuable that it is worth the risk of the user losing the data they have entered? Probably not.