I created an account for a user with a common name. Obviously, such names will be used up quickly. If a user wants multiple accounts, it would be nice to support realms, so the user portion of the name can be reused. But when I tried "user@example.com" I got an error: Only letters and numbers in your login. Any chance of supporting "@" & "." so I can have easy-to-remember logins for different sites/purposes?