The problem is that the survey doesn't matter what level of privacy invasion is acceptable. "Some" invasion is okay. That means a lot to different people. Phone calls, internet monitoring, GPS tracking, car license plate readers and even grocery store receipts all count as privacy invasion but I'm betting more people get pissed at internet monitoring than grocery store receipt data mining.
Of course, I would like to know how many terrorisms have been identified and prevented by any of the privacy invasions. Ultimately though I have to give a well thought out "Fuck you" to anyone that wants to start or continue privacy invasions for safety anyway.