Running Django on Gunicorn with NGINX as Reverse Proxy
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I busy setting up a development environment for Django Framework using Gunicorn (as Django service) and NGINX (as a Reverse Proxy).

When I look at several tutorials [like this][1] one and [this one][2], I see that they use port 8000 and port 8001 (`http://127.0.0.1:8000` and `http://127.0.0.1:8001`). Is there a special reason not to use port 80, like any other webserver?

Port 8000 is often used for radio streaming and malware, so why?

BTW: I am running it using Virtualenv on a Ubuntu 12.04 system.

  [1]: http://senko.net/en/django-nginx-gunicorn/
  [2]: http://ijcdigital.com/blog/django-gunicorn-and-nginx-setup/