Just updated – great virtual world events for May in Silicon Valley and *LIVE* (May 13 and 14) from http://www.digitalmediasig.com Not to be missed! 
Tell your friends!
Wed. May 13 SDForum Emerging Tech SIG (full description at SDForum.org)
“Virtual Worlds and Real Metrics: Tangible Statistics about Imaginary Goods”
with Bill Grosso CTO & VP of Engineering (http://www.twofish.com) to “explore some of the metrics that make sense for a virtual economy” (http://www.sdforum.org/ETSIG )
Thu. May 14 SDForum Virtual World SIG (full description at SDForum.org)
“Open Source Virtual Worlds” with Julian Lombardi (Open Croquet/Cobalt) + Henrik Bennetsen and team (Sirikata) + Dan Miller (OpenSim) confirmed. More presenters may be added. (http://www.sdforum.org/vwsig) (http://digitalmediasig.com)
Fri. May 29 and Sat. May 30
Metaverse U: “Open Source”
“The Metaverse U conference will explore the cutting edge applications of virtual worlds and the open platforms that drive them. The main purpose of this conference is to define a strategy for advancing open source platforms and explore their potential in a broad variety of contexts, including scientific research, education, private enterprise, and cultural programming.” (http://metaverse.stanford.edu/)