Worst practices in Django you have ever seen
Not splitting stuff up into multiple applications.  It's not so much about reusability as it is about having a dozen models, and over 100 views in one app, it's damned unreadable.  Plus I like to be able to scan my urls.py file easily to see where a URL points, when I have 100 URLs that gets harder.
What are the worst mistakes made using Django framework, that you have noticed? Have you seen some real misuses, that maybe should go as warnings to the Django docs?