It is free to join up. What could make more sense: increase your chances of getting a transplant by offering your own parts when you don't need them anymore. I'm sure you need to tell your next of kin about this.
You may also note on the inferior row of related videos, there is a nicely put video argument utilizing the "precautionary principle" which also comes down on the side of the hoaxers. These guys are playing for keeps. I wonder if we could make the game more interesting by having penalties for being wrong.
This place is worth a stop or even a detour. The only bad thing to say about Bozeman is that Ted Turner has recently opened a restaurant there in the Hotel Baxter. Even with that black mark, they do serve pretty good food, especially if you like buffalo or bison I think they call it now. Sort of like Native Americans instead of Indians. Ted's Montana Grill is what they call it.
The dinosaur section of this museum, on the edge of Montana State University, is very well done. I especially like the way they have displayed these creatures, or what is left of them, together with notes on how they did it and where, something on the scientific method and what the significance of these findings are. For young people it is probably worth a day away from their usual schools.