Occasionally people ask us to 'delete' their forum accounts for them. Unfortunately, it is not really possible to do that with this forum software (vBulletin), since deleting an account can be tricky.
This easiest thing for most people to do is simply change their email addresses in their profile; making this change will keep you from receiving updates and notifications.
If you also wish to change your username, you may do that by contacting Urch forum support (2014-09-24 link: http://www.www.urch.com/forums/sendmessage.php).
To remove your username and email address from our database, we can offer these workarounds and options:
(This is taken from the email that I send out to people who request that I delete their forum accounts.)