[stefanix]

Good start to think about "nothing to hide". In addition there is no way of saying what becomes sensitive in the future and who might have access to the data. When pre-nazi germany collected religious census data it wasn't with the intention to supply the nazis with an efficient database to crack down on jews and other minorities. What can comfortably be public changes tremendously over time and who gets access to the data.

The question to ask yourself is really how much risk is tolerable that some data point will be used in the future to discriminate against you.

The other concern is the conformity this attitude breads. Do you really think everybody should refrain from testing the boundaries and adjust their actions to whatever the mainstream is? This way "nothing to hide" is an easy attitude. What kind of society actively discourages edgy thinkers and innovators and where does this lead to politically and culturally? Certainly not a place I want to be part of.

[stefanix]

Nice, the atlantic just wrote an article along the same line. Even if you fully trust the current administration, why make yourself vulnerable to future ones ...

http://www.theatlantic.com/politics/archive/2013/06/all-the-...