Question: I'm working on an algorithm that makes a guess at K for kmeans clustering. I guess I'm looking for a data set that I could use as a comparison, or maybe a few data sets where the number of clusters is "known" so I could see how my algorithm is doing at guessing K.

Answer: 
`request.user` is already an instance of User, there's no point in doing another query.

Plus, you actually need to *call* `save()`.
You seem to have you answer from the above posts but I notice that you did not authenticate the user (you may have done it elsewhere that I don't know about). In case you want to do so, try the login\_reqired decorator <https://docs.djangoproject.com/en/1.5/topics/auth/default/#django.contrib.auth.decorators.login_required>