Be logged in on the site; then use the deletion link. Although it’s called deactivation unfortunately, the Help section speaks of irreversible action (deletion). Further, …please be sure to delete any of your images that you do not wish to display once you are gone. By the way, we don’t like that very much, manual labour. Automatic eradication it is.
URLS:
http://society6.com/
http://society6.com/account/deactivate