Your browsing history will show your passwords that you searched for to people who use your computer. Also, next time you google search when logged on your password might also show as a suggestion.
Otherwise a password-not-yet-leaked will no longer be. If you didn't turn on private browsing as I suggested and are using Safari, type the password you searched for in your URL bar now and you will see why I said what I said.
Maybe someone was like me and they didn't think to not search for their password which ended up on their browser history. The title had password leaks in it and that's the first thing I thought of when I got there: "Hey my MtGox password got leaked lets google it."
For that matter, I have a unique password (with the necessary special characters) for each account that associates with my identity (Not naming any examples here), but only several unique passwords for websites I don't intend to use much e.g. to read newspapers, and apparently, MtGox.
(Yes, I was searching for my MtGox. password because it was the same password I used for random throwaway sites. No I never used it, I don't even remember having confirmed my account there. My asset in bitcoins amount to < $2 USD.)
I still don't understand why all the downvotes. It would've helped me if someone reminded me not to actually google my password with my browser watching. Apparently not anyone else.
Private browsing won't stop google from logging anything. It will make it so your browser doesn't remember what you did, but it doesn't stop the authorities from knocking.
