Reason for discussion topic heading update.  This interview of Elon Musk on 9/24/2007 by nasaspaceflight.com indicates that BFTS now stands for Big Falcon Test Stand.  

http://nasaspaceflight.com/content/?cid=5237

Thus this topic heading has been updated to reflect SpaceX’s own definition for this acronym.  No content has been removed from this discussion topic.