I'd never trade my URL shortener or my podcast+connected-TV-backend for a photo sharing app.
This is a real feather in the Django community's cap. Eat that Rails
For some reason I was thinking Drupal the first time I read through the article... Drupal.
How long do I have to be on HN to get a downvote button? This isn't about Django vs. Rails or any other framework, it's about the stack that Instagram is built on, nothing more. There are no comparative metrics.
I'll be interested to see what happens with Pinterest (also Django).