We are working on a paper about local developer comunities that can be found at GitHub:

Abstract:

Creating rankings might seem like a vain exercise in belly-button gazing, even more so for people so unlike that kind of things as programmers. However, in this paper we will try to prove how creating city (or province) based on rankings in Spain has led to all kinds of interesting effects, including increased productivity and community building.

It can be read at: GitHub rankings and its impact on the local free software development community.

You can raise issues, make suggestions, participate, fork it at GitHub ranking.