Dr. Awkward said:
First of all, a D&D chess set is completely unrelated to D&D. It's a chess set. It could be a Magical Trevor chess set or a Teletubbies chess set and it would have about as much to do with D&D as the D&D chess set.
Secondly, I'm quite certain that there are about forty billion products out there that someone wants to sell me that I can get along just fine without. Like cellular phones, or gold credit cards, or pewter wizard figurines. That I don't know about them is an excellent thing. If I have the need for something, I say to myself, "why don't they make this thing I need? Wait, maybe if I Google it..." and if it exists I can locate and purchase it. Like replacement blades for my Rolls Razor. Those are not advertised anywhere that I've ever seen, but I know where to order them from because I'm smart enough to use the intarwebs to find them. Marketers only need to advertise stuff that I don't want to buy, because if I want to buy it, I'll find it. Sending me card stock makes me less likely to buy whatever the hell it is they're trying to sell me, partly because I know that they're so desperate to sell whatever widget they're hawking that they're willing to spend thousands of dollars to mail the cards out. That tells me that they think the product won't move itself otherwise, which means that it's probably crap.
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