Built on top of django-registration, it restricts registration to a given number of invited person per active user (strategy introduced by GMail to involve 2.0 users).
Support of OAuth in Django.
Support of OAuth 1.0a in Django using python-oauth2.
Turn your models into remote resources that you can access through Django's ORM.
Support for many storages (S3, Libcloud, etc in Django.
Implements a triplestore using Redis to store relations, in Python.