When a new user registers, then a website administrator receives e-mail about that. In that e-mail we display the username of a registered user.
Problem is that since we changed default user registration mode to the "by e-mail", then nobody is really forced to enter username and the administrator receives "" (empty quotes) instead of "UsernameGoesHere".
I'm proposing to display the e-mail instead of username in all e-mail templates.