We've set up a dedicated email address for retrieving your previous account. Send an email to (Edited 5/23/2013: firstname.lastname@example.org) with the following information:
1. The user name you want to regain
2. Your current user name, if you re-registered
3. The email you want to use for your confirmation/verification notice
4. If possible, the email for the original user name
Please check your email regularly (including your spam folder). When you receive a confirmation email, follow the instructions to reset the password for your old account. The new account will have been de-activated just prior to your receiving the confirmation email.