I've also been impressed with the approach. I thought they'd get bogged down in the bureaucratic quagmire, and they still might, but so far they've made a bigger splash than I expected.

I don't know as much about program administration, but there are serious protections in place for respondents to federal surveys. There's something like a 5-year prison sentence for revealing something like individual census responses. Those penalties are there to make people more comfortable about disclosing potentially incriminating personal information.