Facebook posted that it is going to give users the option to share their real email address or a proxied email address.

According to Facebook, “In our tests we found that users strongly prefer having the option to share an anonymous email address. In rare cases we will set the default for the dialog to share a proxied email (instead of the user’s actual email address). We will only do this in a small number of cases (if any), based on an algorithm that will auto-detect applications that we suspect might be abusing email addresses.”

This will enable Facebook to maintain some sort of quality control over the email channel – preventing blatant abuse when users choose to share their proxied email address instead of their real one.