http://blogs.msdn.com/zainnab/archive/2008/08/28/great-article-from-tish-shute-on-the-virtual-worlds-expo.aspx  Things are off and running at the Virtual Worlds Conference and Expo, LA and sadly I am not there.  At least I can read about it in Tish's great articles.  Check out her latest at:   http://www.ugotrade.com/2008/08/27/opensource-interoperable-virtual-worlds-at-vw-2008-laen-USCommunityServer 2.1 SP1 (Build: 61025.2)