Library Camp is a style of unconference. An unconference is is a facilitated, participant-driven conference centered around a theme or purpose. The term "unconference" has been applied, or self-applied, to a wide range of gatherings that try to avoid one or more aspects of a conventional conference, such as high fees and sponsored presentations. For example, in 2006, CNNMoney applied the term to diverse events including BarCamp, Bloggercon, and Mashup Camp.[1] (info copied from Wikipedia entry on Unconference, http://en.wikipedia.org/wiki/Unconference)

A blog all about the unconference movement: http://www.unconference.net

Other Library Association who are hosting a library camp in 2009 :
Library Camp Kansas
Library Camp NYC
THAT Camp ( The Humanities and Technology Camp at George Mason University)
ALA Unconference at the Annual Mtg in Chicago
Unconference Wiki ( Special Library Association Annual Mtg in Washington D.C)
Library Camps from 2008

Library Camp Photo Slideshow