2007 Think (invited conference)
2007 Web 2.0 Expo

2006 Web 2.0 Seeds of Opportunity
2006 Release 1.0 (invited conference)
2006 SuperNova
2006 Vision Science Society Annual meeting

2005 Web 2.0
2005 Accelerating Change (invited conference)
2005 TagCamp (invited conference)
2005 Vision Science Society Annual meeting
2005 BISC FORGING NEW FRONTIERS 40th of Fuzzy Pioneers (invited conference)

2004 Web 2.0
2004 DigiFoo (invited conference)
2004 Vision Science Society Annual Meeting