The document discusses open source principles and how they are being applied at The Tech Museum in Second Life. It summarizes the key open source principles of freedom to use, redistribute, adapt and improve software/content, and obligation to contribute back to the community. It then discusses how The Tech Museum is using Second Life and open source methods to more cheaply and quickly prototype virtual museum exhibits, allowing exhibits to be built for 1/3 the traditional cost and in 1/4 the time through collaboration with the global community. Exhibits developed in this open source process are then built for their physical museum.