The Obamacare web site
gives
data to many companies about its visitors; these companies can
integrate that data with other personal data to increase their
knowledge of the person.
They say that the companies are prohibited from using the data for
"business purposes", but I expect they have already found other ways
to use the data while pretending it is not "for business purposes".
I wonder if the site requires running nonfree Javascript code.
Sure, the analysis is useful — but government relationship to
the public should not be designed in a narrowminded way that considers
only the specific project. This web site should never give any data
about people to any company.