Best things ever. That is, if you’re into cryptography. If you’re not, you won’t understand any of these. But if you are, it will change your life.
http://geekz.co.uk/schneierfacts/fact/170
http://www.facebook.com/group.php?sid=ecf7be29fbced15481f086a28ecd3e1f&gid=2306348476
