Please note: It would appear that spam emails with forged from: lines are being sent to an email address of ours which is configured to autorespond with a "Thank you for subscribing" message. If you did not sign up for our email newsletter but received an email thanking you for doing so, this is the probable reason. Please accept our apologies for any inconvenience. In this case, you have not really been subscribed, and do not need to unsubscribe (although you may wish to anyway). We are looking into ways to improve our system so that this is impossible. Once again, sorry for any inconvenience.
