I ordered items from Oriental Trading and was offered $10 off in a follow-up email. Unbeknownst to me, my zip code, email, and debit card number was used to sign me up for Easy Saver's "services", and for 4 months, I was charged $14.95 a month for a service I never asked for nor ever used.

I managed to get some of my money back (thanks to an angry parent with good communication skills), but we shall see if they take me off their list.