Federal judge tosses challenge to NSA surveillance, with reluctance. I am really torn about this issue. On the one hand, people voluntarily give up lots of information about themselves to third parties all the time. Does this mean they are partially waiving a right to privacy from government surveillance? Can NSA use the commerce clause or national security to mine the date? I don't know.
On the other hand, we do not want to live in a police state. Is reading the data without knowing who sent it a violation of the right to privacy? Again, I am unsure.
It is always a balancing act between freedom and safety. There can be too much freedom and too much safety. No one knows the answer to how much freedom is too much freedom and how much safety is too much safety.