You may or may not realize that you have a Facebook email address. It’s an @facebook.com address you can use to correspond with people on external email accounts from your Facebook inbox. Though it was called a “Gmail killer” when it first came out in 2010, it seems instead to have been D.O.A. As far as I can tell, no one really uses it. No one seems to want the Facebook inbox to be their main email account (with good reason). Facebook is trying to change that with a new little nudge. On your profile page, Facebook has taken the liberty of making your Facebook email your default contact address. Read the full story at Forbes.