This very official-looking document arrived in my mail several days ago. I knew instinctively that it was not from Medicare, but I also know that it's going to fool a lot of elderly people. It is almost certainly totally legal, but the disclaimer "This is an advertisement and a solicitation of insurance" is written in about a 6-point font.
I am not anti-business or opposed to clever selling techniques. My father was a classic traveling salesman with a four-state route, visiting electric utilities to try to sell them transformers. He was creative in his inducements and rewards to customers, but never to my knowledge deceptive. I find this kind of crap abhorrent.