The more hobby evangelists we have, the stronger the hobby will be. This guy has a pretty sweet vintage collection and is as qualified of an "expert" as you'll find based on this article. He is also much closer to the subject of his favorite card than most of us will ever get to our favorite players. If you're a seller or an eBayer, I strongly recommend doing things like this as a great way to market your business. Getting it down to the grass roots is the most effective way to build your business and word of mouth about it.