It’s basically a conference of people where the people attending the conference are the ones doing the presenting of topics. You sign up for a time slot to do a presentation on “XYZ” and if people are interested they come and check it out.
So for example I plan on doing a talk about geocaching. When I arrive in the morning their will be a board where I can sign up for a time slot in one of the many rooms that will be available. When the time comes I will give my presentation (each presenter will have approx 45 minutes to an hour), answer questions, have a discussion.
Some of the topics I know that have been thrown about by people who are involved in the planning have been; Papermaking with Recycled Materials, Molecular Gastronomy, Photoshop: how to edit any image, Open SCAD – Designing 3D Objects, Symfony2 by Example.
This is just a small example of the type of things that will be presented, I’ve even heard someone thinking of teaching how to make head cheese.
Let me know if I can answer any other questions.