An interesting visualization. HOWEVER, Noté 4 sur 5 étoiles

harrumphed my inner paranoiac, I realized after playing with it that I just potentially gave every single one of my Internet passwords to Paul Sawaya.

Cette critique est pour une version précédente du module (0.12). 

Put your paranoia to rest, and check out the source yourself: https://github.com/mozilla/watchdog-visualize-passwords

Excellent point, though, security software that isn't open source isn't worth taking seriously.

Also consider that any add-on you've installed has access to the same data, and could potentially harvest your passwords just as easily, while claiming to do something else.