Seems like there's always some strange news with yellowstone - whether it's wildlife going dead from getting to close to a particular pond, or sightings of strange ufo type lights on the horizon. I'm sure many places use the geothermal energy, but it's mostly Iceland that I've heard about. The no-wishing-well sign lol - I'm sure it's needed :)
Oh yeah, and one of their geysers which had been silent for years had a burst of activity it seems.
Definitely, about the well wishing sign. Some folks just don't know any better.