my sister got one a couple years ago and trashed it without opening it and then was hounded for payment. So when I got one I knew enough to open it and return it. Also a couple years ago I got something that looked exactly like an invoice for Fons & Porter's mag, which I didn't remember (re)subscribing to, but ... Anyway, in the corner in very small print it said "not an invoice." I guess they were hoping people would think they had subscribed and had forgotten about it.