Many companies require the option to provide users with anonymity. We can support this today when SSO is not being used by allowing users to modify the name that displays in the portal in the Edit Profile page. However, when SSO is being used, clicking on Edit Profile displays the user information but it is grayed out and states "Please update your profile through your SSO provider".
Some companies would like to have the option to hide portal user names altogether.
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Today we launched a new option to hide portal user names in ideas portals. With this setting enabled, users can add, vote, and comment on ideas anonymously within the portal. Check out the blog post for more details.