November 2005 - R. Ackland presented at the NSF-funded Social Networks and Cyberinfrastructure (SNAC) workshop held at National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign.

November 2005 - VOSON web site launched.

August 2005 - VOSON project formally commenced with awarding of Australian Research Council Special Research Initiative (e-Research Support) grant SR0567298 (Ackland, Gibson, O'Neil, Buchhorn, Bimber, Ward; 2005). However, the ideas behind VOSON date back to 2002 and are particularly evident in the work on ARC grant DP0452051 "New Methods for Researching the Existence and Impact of Political Networks on the WWW" (Ackland and Gibson; 2004-2006).