For those wanting to protect themselves against being watched by the Feds, the best protection you can get (short of directly pre-boot encrypting your hard drives) is with
PGP. Note: If you're not in the US or Canada... this level of encryption is not available to you. (through legitimate means) It also is apparently only for non-commercial use.
This is not a spam. I do not work for any of the companies involved, they have no affiliate programs (that I'm aware of), and PGP is widely known for being free. I just thought some of you would be interested in this for your privacy and peace of mind.