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Well, I have to say actually there is not really conclusion for that. The code in the article is actually a script that you can run in your computer, and it will extract the all domain user information for your domain, which include the account creation date, and account detail.

And you can use it to manager your user. For example, you can see if there are any suspicious account left over or still active even the staff was gone. And I am kind of pretending the role of a IT audit without the system administration right, so you can generate a full list yourself.

Hope it can answer you :)