How to remain secure against NSA surveillance

“The NSA has turned the fabric of the internet into a vast surveillance platform, but they are not magical. They’re limited by the same economic realities as the rest of us, and our best defense is to make surveillance of us as expensive as possible.” Bruce Schneier works on the assumption that the NSA is able to decrypt most of the Internet.
www.theguardian.com

On the same subject, David Meyer felt moved to pen an open letter titled ‘Dear stupid, stupid NSA’.