If you’ve finally had enough of the Facebook backslide on privacy (nice graphic that covers the changes) and their evil interfaces you can try to delete your account with this link:
http://www.facebook.com/help/contact.php?show_form=delete_account
After "Deleting", do not log in for at least two weeks to test if the account is really gone. Otherwise Facebook could reactivate the account.
Southpark sums Facebook up.