About Diceware
Weak passwords are a big flaw in computer security due to a lack of "entropy"
or randomness. For example, how many times have you used a common name or word
in a password, or perhaps the number "1". Not very random, is it? :-)
Fact is, humans are terrible at remembering random combiations of letters and
numbers, but we are great at remembering phrases of words. That's where diceware comes in.
Diceware is based on the propsal at
http://world.std.com/~reinhold/diceware.html
wherein virtual dice are roled 5 times, and the 5 digit number used against a lookup table of words.
4 dice rolls gives you 4 random words which are easy for a human being to remember, yet have
a high amount of entropy which makes them hard to crack.
For more information on Diceware: