Ok, the investment advice is a little over the top but the coin looks ok with me. I try not to read the hoopla but just look over the coin. I can find nothing wrong with the seller for trying a little hoopla. After all, we're in America, home of swamp land for sale in Florida.
:thumb: I see nothing wrong with the listing, I personally wouldn't put all that info on there, but that is the seller's choice, and I guess if it sells the coin for more, than more power to him.
The more SEO keywords you use in your ad the better your chances are of being on the first page of a Google search for a item. I would say that this person knows what he is doing.