IMHO, any password shared with google and/or Facebook is instantly "leaked". I trust them less with my passwords than I do randos.
Reminds me of old IRC where you would trick a noob into revealing their password, then kick them out a bunch until they changed it. Channel would have a good laugh.
I don't understand, why do you say this? I would think that google's security is very solid, and am not aware of them ever being hacked to gain access to user accounts/passwords. Are you saying they're deliberately leaking user passwords to 3rd parties?