Oh, I just checked Site Meter and saw that the Census Bureau came back today! (I'd do a screen shot, but don't want to bug Brendan at work just now, since I don't have the program to change the image from a TIFF to JPG on my machine. Maybe later.)
They stopped by at 8:17 this morning and read my post from yesterday! I didn't mention it before, but the post they read yesterday was my original post about receiving the survey.
Really, I'm touched. Thanks!