Aw, doesn’t this take you back? It’s a form asking readers to send in their thoughts to be gathered for a future edition of Stan Lee’s Soapbox. Back then, it took some serious effort — writing, clipping a page out of a comic, and stamps — to whine about how things didn’t live up to your sense of fanboy entitlement, or to praise comic creators for their daring portrayals of super-powered nerds. It took commitment. It was a natural troll deterrent! (Well, that and editors getting to choose whose letters saw the light of day.)
[From Amazing Spider-Man #28, as found at Comics Make No Sense.]