Here's the source code for the dealviewer website.  It's written for the svn version of django, but feel free to browse.  This is a little out of date compared to what is currently running out there, but it should serve as a decent example of how it works.

• models.py 
• views.py 
• Deal.py 
• dealer.py 
• Templates
• deal.html 
• deallist.html 
• feedlist.html 
• head.html 
• index.html 
• save_search.html 
• search.html 
• since.html 
• tail.html