Have you checked the contact information you list on your Facebook profile?
Chances are that it’s now listing an @facebook.com email contact address for you.
You can thank Facebook for making that change without telling you.
Back in April, Facebook quietly announced that it would be giving users @facebook.com email addresses so that they matched their public username (used as the URL for users’ profile pages).
However, the social network didn’t make clear that it would also be making the @facebook.com email addresses the default address displayed to your online friends.
Clearly this all part of the site’s plan to get more people using the @facebook.com email addresses, thus making the social network even harder to extricate yourself from.
If you don’t want your @facebook.com email address to be displayed on your profile, you should change your…
Read more in my article on the Naked Security website.