"consider consequences on multiple levels prior to publishing private data"
Or maybe consider consequences on multiple levels prior to collecting private data?
Hope that once governments are bitten themselves hard by the data gathering frenzy, they'll reconsider the rules about data gathering... I wait for the first politician being shown "exercising" at his mistress house...
And, no, opt-out is not enough - people should at least have to opt-in to any data collection.