I got a promotion mailer today and the disclaimer had this note
You are receiving this email as information regarding our products and services. You may, at any time, choose not to receive email marketing literature / information about our products and services by [clicking here] to unsubscribe. We will delete your email address from our mailing list without charge.
Without charge, heh?
When I tried clicking the link providede to unsubscribe and enter my email address, it says
Please enter a valid Email address
I am going to email their customer support and see their response.