Author of this hack speaking - I've built this interface 3 years ago to track downloads of PM2 (https://github.com/Unitech/pm2), a process manager for Node.js I've authored. I'm really proud to see this dashboard here on HN!

In term of UI, the map is inspired from the impressive Tron Movie interface (Gmunk artwork http://gmunk.com/TRON-Board-Room)

The dashboard is very hypnotic and it asked a lot of meticulous tuning to give this effect. Hope you like it!