As for phone calls, if you want to shield against eavesdropping or stop the NSA obtaining records of who you are calling and when, there are a few options.
You could use an encryption app like Silent Circle to make and receive encrypted calls and send encrypted texts and files, though your communications will be fully secure only if both parties to the call, text or file transfer are using the app. Other than Silent Circle, you could try RedPhone for making encrypted calls or TextSecure for sending encrypted texts.
A new frontier of sweeping secret surveillance is not a conspiracy theory but a burgeoning reality. But it is not an Orwellian dystopia - at least, not yet. Tools to circumvent government monitoring exist and are freely available. The onus is on us as individuals to learn how to use and adopt them.
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