"Thank you for participating in the 2010 Census." That's what is printed on the back of the envelope you use to mail in your census form. Yet on the front of the envelope they send you: "YOUR RESPONSE IS REQUIRED BY LAW" Its like if the government sent you a letter saying "Hey thanks for paying the income tax we remove from your check every week." I'm not exactly participating if its forced am I? Maybe its just my medication, but it made me chuckle.