Proper migration names are important. This article covers how Django's migration system works and tips for making their names more human readable.
A deep dive look at how a bug was created around accidentally sending hundreds of users messages they got paid when they didn't.
A nice overview of Django User Model limitations and workarounds.
Jacob Kaplan-Moss's list of “Probably Are Gonna Need It” security features for your web app – things that you should build up-front, not wait until you need them (when it’s already too late).
Simon Willison's You Ain’t Gonna Need It (YAGNI) list of features you shouldn’t add just because it might be useful in the future—only write code when it solves a direct problem.
Adam just released the 3.2 update to his excellent book on Django testing. Highly recommended.