Just received my official United States Census 2010 form at the end of last week. Thankfully, I recieved a letter the previous week from the Census Bureau. When I opened the letter, it read that I was going to receive a letter from the Census Bureau. Interesting....they sent a letter to inform me that I'm going to receive a letter. So then....do I need to send them a letter to inform them that I'm going to mail their form back to them?