Well, certainly, the census is used by people who market, as you say. That's one use of the census. By no means is it the most common application. It's used widely, as you've heard, for policy and planning purposes, by educational institutions.
So that is one application, and in fact it's interesting that in using the census, yes, firms do want to advertise, but they are able to better target their advertisements. For example, they're able to cut down on the number of brochures they send to people who probably won't be interested. I'm sure you will get too many—