I noticed the new e-mail feature that is clickable from the user's profile but doesn't actually reveal your personal address. I wonder what happens if someone sends you an email and you have not entered in your e-mail address for public display on your profile. They would not know that you weren't able to receive their email.
There is no privacy problem now if you were to select this because of this new feature. It would be a good idea for everyone to change their profile to include their email addresses in the box below where it says: "Email address (displayed on posts)" so you won't miss any e-mail messages sent to you.