[gerard]

I've seen some dark satire on HN lately. What I see here is another neat implementation of an unconstructive idea, amusing for reflecting our flaws. We really should know better than to share or encourage sharing passwords with third parties. The same goes for CC details ("enter your CC and see if it's been stolen"). The right place for a widget like this is on the signup or change password page itself.

You've put forward a little risk/reward proposition where users are unable to properly assess the risk. People love to be rated, that part's easy. You rely on them to take your word on the site's affiliation, to not understand that you can collect passwords despite saying otherwise, or vary the site's behavior mod N, or cross-match fingerprint:password with leaked/purchased/accumulated fingerprint:username data, and so on. They look at it and think, 'looks legit'. It might well be, but the proposition is unfair and its unconstructive to condition users to accept this type of trade-off.

[SanderSantema]

Just to add to your comment:

A safe way to rate your password on MacOS is to use the Keychain Access app. Generate a new password by pressing cmd-n and than fill in your current password or a new password you'd like to use. It even includes a function to automatically generate passwords, automatically generating passwords online isn't something I'd like to do either. I either make them up from random text, which I see online & offline, or I use the Keychain Access app.

Besides the native Keychain Access app all other decent third party password managers include a way to automatically generate safe passwords. This makes online tools redundant, unless they've been made with another purpose in mind like practicing coding or possibly malicious intents.