Security experts may nag us relentlessly to use different passwords for each Web site, but who, frankly, has that kind of brain power? Remember a dozen different passwords? Come on.
Firefox includes an integrated password manager (it's at Tools|Options|Passwords) that memorizes passwords, and if you want offers a "Master Password" to secure all the others, but a better tool is Password Maker, an extension that creates complicated, mathematically-difficult-to-break passwords automatically, but asks you to remember only one password.
Password Maker even has an online version so you can access its protected sites when you're away from your PC.
We're not cryptologists, so we really don't understand the science behind the extension -- there's more information here if you're interested -- but all you need to know is that your passwords aren't stored anywhere, so there's nothing for ID thieves to rip off.
