Facebook has taken yet another surreptitious action* in your account without your permission by changing your preferred email address to a Facebook email address based on your user name (or the number assigned to you if you haven’t chosen an official user name). This means that the contact email that visitors will see is the Facebook email rather than your usual email address. If you would like to change your preferred contact email address back (as I did), take these steps:   1. Go to your profile page. 2. Click “About” (or if you haven’t switched to Timeline yet: Click “Edit Profile” in the top right corner.) 3. Click the edit button on the “Contact Info” section or select “Contact Information” in the left sidebar. This will bring up a list of all the email addresses Facebook has on file for you, including your new facebook-domained email address. 4. Left click on the open circle to the right of (your name)@facebook.com and choose the “Hidden from Timeline” closed circle. 5. Choose the email address at which you would like to be contacted and change  it from “Hidden from Timeline” circle to an open “Shown on Timeline” circle (or “Shown on Profile” rather than “Hidden from Profile”.)