Have you filled out your 10-question Census form and mailed it back to the government yet? If you haven't, you better get to it, because the questionnaire is due today. Over the next several weeks, the Census Bureau will begin dispatching some 650,000 workers to track down those that haven't returned their form to collect the laggards' information manually. Why, you may ask, does this matter? Because, other than forcing people to deal with friendly government employees, taking the time and energy to track down citizens drives up the cost of the effort...a lot.