From a personal point of view, I've been using keyboard buttons to navigate through forms for so many years (tab to go to next field, space to tick/untick a che

From a personal point of view, I've been using keyboard buttons to navigate through forms for so many years (tab to go to next field, space to tick/untick a checkbox, etc.) that it wouldn't save me any time. From the point of view of more generic computer users (such as my mother), I wouldn't think learning to type a space would be any easier than learning to hit tab, and would probably just cause confusion, due to the fact that different websites use different formats.