Wow, after user # 10.000 or something, the user map did not work for me. By chance I just tried, and somehow it worked (after freezing in 5 minutes)
Here we are: (note that more persons from same city without specific address makes more dots right on top of each other)
Oh, and I have had to drop the Yellow Dance Machine, and am building on White Dance Machine. The yellow one was not optimal in the basic structure, and I hated programming it, because it put too much strain on the servos. And I ran out of yellow paint!!