Is the fix to go to https://github.com/settings/profile https://github.com/settings/profile and put an email in the field labeled "Email (will be public)" ? Ho

Is the fix to go to https://github.com/settings/profile https://github.com/settings/profile and put an email in the field labeled "Email (will be public)" ? How does Coderwall allow github signups without me sacrificing an email to the public?