I've been annoyed at recent envelopes from Chase labeled "Do not discard--About Your Account" or something similar, and which turn out to have offers for Chase credit cards--one of which I already have, my Visa that earns me Amazon rebates. (Faintly justifying the "about your account", in their opinion.) Today's mail has a better one: a 9x11 manila envelope labeled in red "DO NOT BEND", as if it contained photos. All it really had was another offer for a Chase credit card ("Chase Business card with Premier Cash Rebate"), and an envelope to mail said offer back. All of which could be bent, folded, etc. without any loss of functionality.