The poster will go over the basic idea and technology behind Read the Docs. I expect that some attendees will already be familiar with the site. For them, I can go more in depth into the technical workings and interesting anecdotes that have come from running a large open source Django site.
For people that aren't familiar with the site, I can introduce them to the concept and ideas, and try and evangelize Sphinx and Read the Docs as the de facto documentation toolset for the Python and greater Open Source community.