So close Statistics Canada, so close... Hey, cool, I can fill out the 2006 census on-line.
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Arrrgh I am pretty sure that securely submitting a form is THEN ONE THING that we've got pretty much figured out in HTML/HTTP. THE ONE THING that you don't need a bunch of signed applets and java serveletts and crap to do. THE ONE THING!
(Oh well, it looks like they at least went to the effort to make it properly cross-browser compatiable).