Got this email recently. I made a macro and sat at my computer jamming F12 (Bound to repeatedly press 1 while held down) in World of Warcraft, and it's not exactly asking me if I want to confirm my e-mail address. Just a little concerned that I'm starting to get emails to my non-public email address. (I guess it's public now, but oh well.)
Either way, it seems pretty legit. >.>