If you are curious about the code running this community or would like to help improve it, check out the developers home .
As you know the code is open source. It can not only be downloaded  and modified but narnua now made it extremely easy to get a local version of the site running on Windows. It allows get from zero to login in less than 5 minutes without any special skills. Check out her Blogpost on the BeVolunteer Blog .
This nice bundle has already been downloaded more than 30 times since it has been made available on sourceforge yesterday .
Philipp [volunteer & coordinator, software development]