We may release or reassign an account's username if the account has been completely inactive for a long period of time. By completely inactive, we mean no activity of any kind. Not all activity is public — an account that hasn't posted a public Pen in awhile can still be active in many other ways.
If you're interested in a username from an account that looks inactive, please write in to email@example.com with both the username you're interested in and your current username. We'll let you know what we can do!