Don't trust traditional encryption? Stegography, or the practice of hiding information within larger information, is pretty cool. It's easy to crack if the person knows there's actually a hidden message in the larger datastream (usually a photo, but sometimes something else). One of the most amusing ways to hide a message in the noise comes from Spam Mimic, which will hide your short text message into a spam email, suitable for pasting into an email message to your secret friend. Of course, now that it's been posted on Slashdot, it's useless for really secure communications (not that it ever wasn't) but it could be just the thing for trading intimate messages with your lovey at work.

Anyone know anything about stegography and mp3 files? Could be interesting...