The Swarm Development Group (www.swarm.org) and the Department of Economic and financial sciences of the University of Torino, announce the 2005 SwarmFest, in Torino (Italy) on June 5-7, 2005. At SwarmFest 2005, http://www.swarm.org/wiki/SwarmFest2005, scientists, modelers, and programmers working in a wide variety of domains will have the opportunity to share their research, knowledge and experience with multi-agent modeling including (but not restricted to) the Swarm simulation system. Pietro Terna