[filosofo]

And, although our long-term memory for images and words that we've assigned meanings to is quite good, we don't do as well with passwords, which (ideally, at least) should look like a near-random string of characters. It's another challenge entirely to remember which password to associate with a specific account.

It seems like this is easy enough to solve with a little instruction: have users make up a phrase that has to do with the account, and use the first letters from each word as the password: it's unique, non-dictionary, yet memorable.