I think it's more clear in it's current form than it would be with your suggested change. With the placeholders it's seems obvious to me how to use the form. I

I think it's more clear in it's current form than it would be with your suggested change. With the placeholders it's seems obvious to me how to use the form. It's interesting though to see that something I think is quite clear isn't clear and could be improved to someone else. Shows how important testing this kind of thing is (although maybe not in the case of a small site like this).