I have only tested this with Chrome, but what I see is that Chrome does not autocomplete the form field (i.e. insert your name/etc into the text field). In Chro

I have only tested this with Chrome, but what I see is that Chrome does not autocomplete the form field (i.e. insert your name/etc into the text field). In Chrome, the decision to add previously-entered text into the field is left to the user, through selection from a dropdown that Chrome displays below the text field. Presumably Safari just sticks the text in the field as soon as the prefix added to the field using fake keypresses matches up with your addressbook info. I havent used the autofill feature (have never trusted it), but in Chrome apparently it is site-specific, and requires user intervention for it to work. I'd be interested in how FF handles it.