As I understand it now there are actually a couple members of the community with access to Worldmachine. And possibly others that I’m not aware of, or who will purchase it in the future.
I myself haven’t spent too much time with the program and am not really experienced. But Since a couple of us have access it might be good to get a discussion going on using WM for terrain generation in MC.
Post tutorials, tips and tricks, and your own work here so we can all get better!