Passwords are a pain. If you want them to be hard to guess, they end up being hard to remember, which leads to people doing fun things like writing their password on a Post-It note attached to the monitor, or if they’re more security conscious, carefully hidden under the keyboard where nobody would think of looking.
But if you’re more concerned about services being cracked rather than having your password guessed, those clever complex passwords aren’t much use. There is another way, however, and xkcd documents it nicely today. As always, click the image to see the whole thing in its natural environment.
 Or not