Which is an easily fixed flaw, when it comes to emails.
Usernames, yeah, you're not going to keep those private. But sometimes account names are not the same as display names, and display names can be duplicates, while account names should be reasonably protected.
Usernames, yeah, you're not going to keep those private. But sometimes account names are not the same as display names, and display names can be duplicates, while account names should be reasonably protected.