Audio Communication Listserv Open Source 
Beth's Blog: How Nonprofits Can Use Social Media
MARCH 9, 2007
It is based on some open source code called Pligg that creates a "digg" like interface. The nptech tag stream (plus other sources) has been imported, so you can comment and vote on tagged items. If you are interested in community plumbing, here's rough diagram , although it might have changed since a few days ago.
Beth's Blog: How Nonprofits Can Use Social Media
NOVEMBER 17, 2007
The Journal of Computer-Mediated Communication October issue is devoted to scholarly research on social networks. leading to an impassioned request for best practices for minimizing damage when this security breaches occur on several listservs. The NOSI Choosing and Using Free and Open Source primer is on the ICT Hub Knowledgebase!
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