Facebook users discovered over the weekend that their listed email addresses have all changed to “@facebook.com”. Facebook made the change without making an announcement or asking for permission. In addition, users were not alerted about the change after it had taken place. As a result of the change, users either have email addresses ending in “@facebook.com” or their email addresses have been hidden completely.
Fortunately, you can choose to not have your “@facebook.com” address listed. If you want to change your email address back to your original one go to your profile, click “Update info”, scroll down to “Contact Info” and click “Edit”. Select with whom you want to share each individual email address and to the right of that you can choose whether you want to display your email address on your timeline or not.