The probability of your home or work place getting burgled is probably lower than the chance of the N random websites you have passwords for getting hacked or burgled.
I adapted it to carry my passwords in my wallet: http://blog.jgc.org/2010/12/write-your-passwords-down.html
It's more portable that software password managers, though the passwords are likely to be less secure. Then again, I keep ending up having to narrow down what characters I can and cannot use in a password after generating them, so you can't make as much use of that as you'd want. A lot of user will still just use '1234' everywhere, but for most users it might actually be pretty good.
On top of that, having a list of accounts makes it easier to cross reference them when you see a news report about a site's password database being leaked.
a) keep it physically safe
b) use a relatively simple, memorable cipher (e.g substitution)
c) use a different password for each site
... rather than trying to get them to use LastPass or Password Safe or the like.
A kindle version of this would probably qualify for 'most ill conceived' however ;)
Chance of burglary: ???% Chance that one of the 1000 sites you signed up for gets hacked because they're bad at security: ???% + 1
I'd much rather buy this for my grandparents and have them use 1000 complex passwords than have them use one password for everything and have them be screwed when X Service gets hacked.
But let's be serious, this isn't going to get stolen.
If a burglar steals it, you can run at the bank to take your 'backup list of passwords' and start changing your passwords.
If you lose it, same thing.
Then you re-create another book so that there's always one in a safe at the bank ; )
I've got a list of all my passwords, without any encryption, in a safe at the bank. They serve two purposes: in case I forget my passwords (I do write them down at home in some 'encrypted' form that is not meant to resist the NSA but that would stop 99.99999% of all the burglars on earth) or in case I die (my family would then be able to access my various online accounts).
This is not inspiring in me further confidence in the methodology...