Important! If you attempt to register and do not get an email within 5 minutes please check your spam box. This is especially true for Microsoft owned domains like Hotmail, Outlook, and Live. If these do not work please consider Gmail. Yahoo, or even AOL email which works fine.
got this a few times today, clicking back and hitting submit seems to work when this comes up so, maybe it's just a random traffic non-issue... ok, just thought I'd mention.