[dvirsky]

from TFA: "If a generated password is ever compromised, you don’t need to memorize a whole new secret key and update all of your passwords. For that service only, just add an incrementing index to your secret key".

The extension doesn't force you to use one master password, and it doesn't have to be a dictionary word, too.

I think adding options like an auto expiring password (adding the month or year etc as a salt) can improve this further. But I like the idea in general.