Nodespots/Planet Earth, Kazan
We have built cities out of github repositories and made citizens out of forks.
We have got statistics for node.js forks calculated Karma based on two Karmas: author and contributor. Currently we take into account commits and time of commits, but planning to calculate using much more parameters.
We have calculated rating of node.js cities based the stars, contributors, subscribers, open issues and forks. Based on the rating we have built the list of the largest node.JS cities.