It’s still easy enough if you use a mental algorithm.

Say, for example, your chosen memorized password is “correct horse battery staple”. Let’s make that password different for every site and service you use without having to remember each one.

For instance, you’re signing into your todon.eu account.

Now, let’s say your favorite one-digit number is 5, because your Auntie Mabel’s birthday is on the 5th and she always enjoys your visits.

Combine todon.eu and the numeral 5, by choosing the 5th letter in the address. That’s N.

Now, to turn that N into an innocuous-looking word you can add to the others in your password. Going over to your favorite phonetic alphabet, you see that N is “November.”

Guess what? Your secure password for todon.eu is now “november correct horse battery staple”.

Signing into your old account on Myspace.com? Using the above pattern, your password is “alfa correct horse battery staple”.

Once you get into the habit of doing this routine, it’ll become second nature and you’ll be able to figure out your passwords to anything without trouble, using just your one memorized stock password plus a simple memorized tweak.

You can also make your own rules for exceptions. Are you buying hacker magazines from 2600.com? You get to decide if you want to count the dot or the C as the fifth character, and what to type in for the dot. (Perhaps “dot.”)