With the 0.3.0 release of django-relationships, I've made a couple backwards-incompatible changes which I thought I'd mention.

I recently posted on writing an app that allows you to create flexible and descriptive relationships between Django's built-in auth.users. django-relationships is the result.

Doing a quick search on the Django Developers group for 'user model' yields a bunch of requests for extensible user models. There's also an epic ticket, #3011, opened 3 years ago on this topic. I don't really feel one way or the other about it -- this is just a roundabout way of excusing the hack you're about to see.