Not sure if this has always been a "feature" of Facebook's email service, but apparently you can login with the facebook email address. A would-be hacker only

Not sure if this has always been a "feature" of Facebook's email service, but apparently you can login with the facebook email address. A would-be hacker only needs to guess your password. Case in point: a friend has already told me there have been renewed attempts to log into her account from other locations and devices.