The big challenge is to get people to actually fill out their forms. The Census bureau has an App that lets you type in a ZipCode and see the 2000 Census results. It is pretty dismal in some neighborhoods. Among other things people don't trust the government; the Census bureau says that the information will not be released. (Interestingly it says that after 72 years the data will be released - I wonder where they came up with that number?).
A big question remains in our household before we fill out the form - in particular who is to be Person 1 and who is to be Person 2. Several choice methods have been suggested - I was the first person to live here rsc was party A in our marriage; RockPaperScissors. I wonder in opposite sex marriages what percentage of men are Person 1?
The form allows for 12 people in a household with no instructions about what to do if there are more than 12 people (some of our people are lobbying to be included, but since none of them can write or read we don't really have to deal with this).