The fastest way to get your account deleted is to send a Private Message to aarinfantasy.
Just type "Delete Account Request" as the subject.
**Please note that once your account is deleted, it cannot be retrieved. We cannot restore any data that is lost as a result of this.
UPDATE on Jan 2021 (from Aarin): If you're here to delete your account because of Google or some website mentioning your account here may be compromised, please note that we have already resolved this some time ago and it was not updated by Google. Do check the announcement here about it before you decide to delete your account: Security Concerns