I was trying for something that wouldn't be quite as helpful as "There are X other coasters at this park" or "It's in Spain" or "The manufacturer was founded in 1990", all of which would allow people to apply quick filters to RCDB. All of these are examples.
I took "Blue Fire Clones" as geeky points of reference around the world (could have used Capital Cities, or nuclear power stations or G8 countries for example) in order to let people start to figure out what areas of the world this coaster could be in without specifically naming a country or continent. Giving both current and future closest coasters seems to be enough to narrow the list of possible countries down quite well.
I took "Blue Fire Clones" as geeky points of reference around the world (could have used Capital Cities, or nuclear power stations or G8 countries for example) in order to let people start to figure out what areas of the world this coaster could be in without specifically naming a country or continent. Giving both current and future closest coasters seems to be enough to narrow the list of possible countries down quite well.