Q:

Python+Django social network open source projects

I'm looking for some open source, free to change and use project written on Pyton+Django with following features:

Blog (for site, not for users)
Users Registration
User Profiles 
Adding friends, watching what friends added
Award system for active users (carma, rating)
Content rating
Comments
Probably different users levels (for automatic moderation)

Basically all features of modern social network :) Just want to find some foundation to build site on top of it. 

A:

Django has authentication and commenting built in, but most of the rest is covered by Pinax. 

A:

There is an application that covers all of your requirements: vikuit. 
django, python, social network, profiles, rating, registration.... 
It's open source, so you can adapt or improve.  I used their forums and SSO as a base for another app.