Another happy bragging point about my workplace, the Sunlight Foundation. (And thanks to you who have spoken to me privately about it.) Sunlight has a guide for Transparency Camp, our annual meeting (convocation? unconference?) that has many transferable lessons for those organizing a conference.
And while you're at it, why not try out Sunlight's SuperPAC identifier mobile app (Ad Hawk) or follow coverage of the presidential electoral conventions.
Of course, I don't speak for Sunlight (but then it doesn't speak for me either.)