Yes, the whole question of mandatory is critical here. In my own household and the household I grew up in, which was a very busy place, seven children, there was all kinds of mail coming in asking for a million different things. I know that in our house, if it was mandatory, we tended to get to it and do it because it was required that we do it.
Have you done any analysis of this issue of people responding because it's mandatory versus people responding because it's simply voluntary?