In a JIRA User's details page, it would be beneficial to show which user in JIRA created the user. This should probably only be visible to users that are in the jira-administrators gorup.

The usefulness of this feature is that it creates accountability. If there is a problem with the creation of a user's account (e.g. associated with the wrong authentication directory), the person who created the account can be notified of the error and (re)trained how to create new user accounts correctly.