BarCamps are loosely structured conferences (also known as 'unconferences'), usually held for one or two days. See http://www.barcamp.org/ for more discussion of this approach to conferences.
["/DC"]: A Washington DC-area PyCamp being planned for October or November 2008.
[http://pycamp.python.org/Texas/HomePage Texas Python Unconference], held on September 15-16 2007.