Not the droid you're looking for. Keep it secret, hide it, transmit it securly.
Security is the hidden warrior in all wars, and sometimes it's just plain fun.
If you're interested in cryptography, especially steganography , you might want to read a post I put up on Slashdot this afternoon. It details how a hypothetical data haven could work for secure transmission of information between you and someone else, where not only the data is secure, but also the information about who you're sending it to, where you're getting it from, and whether you're getting it at all. Best of all, it's all out in the open.