Yahoo! Password Leak
Gina Smith writes about the Yahoo! password leak inTechRepublic and adds a link were you can check whether your password was leaked.
I changed my password as soon as I heard, and hope you did too. Luckily my password was not exposed in a form that Sucuri could detect. Even if you were not in the list you should change your password, as this could just have been a partial list and your password could still be floating around.