Comment on Usernames: allow, require, or forbid users to user their email address as a username?Comments−ricky_clarkson19yAllow it, maybe even default to it, but don't require or forbid.Another approach is to require it, but allow an optional display name.
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Allow it, maybe even default to it, but don't require or forbid.
Another approach is to require it, but allow an optional display name.