> Extremely high degree of privacy (you can put 50.000.000 USD worth of USD in a USB stick and pass through 7 airports, or print them in an A4 page encrypted wi

> Extremely high degree of privacy (you can put 50.000.000 USD worth of USD in a USB stick and pass through 7 airports, or print them in an A4 page encrypted with GPG, and no one will know). Even better, you can keep those millions in your head, using a deterministic wallet (google "brainwallet"). In short, you keep a password in your head, and when you are ready to spend, all you need is access to an Internet-connected device - using that password you can reconstruct your private keys and import them into a bitcoin client.