Speaking Engagements in 2008
 Date  Event  Organization  Venue
 September 30  Op informatiedieet  Mensit  Kamerik, the Netherlands
 September 25  Op informatiedieet  TiasNimbas Business School  Tilburg, the Netherlands
 September 18  Economische inzet en gebruik van informatie  Economenforum  Delft, the Netherlands
 June 19  Enterprise Portals, mensen en hun informatiegedrag  Heliview Zoetermeer, the Netherlands
 June 18  Informatiegebruik voor marketing  CRM Association Amersfoort, the Netherlands
 April 24  Unified Communications  CIOnet Utrecht, the Netherlands
 April 10  Jouw informatiegedrag  Capgemini Interim Management Utrecht, the Netherlands
 April 3  Het Nieuwe Werken  Productivity Partners Zeist, the Netherlands
 March 20  Informatiegedrag van de nieuwe werknemer  TopForce Rotterdam, the Netherlands

Speaking Engagements in 2007
 Date  Event  Organization  Venue
 November 26  Ons informatiegedrag  ING Headquarters  Amsterdam, the Netherlands
 November 1  Op informatiedieet  Erasmus University  Rotterdam, the Netherlands
 September 14  Op informatiedieet  TiasNimbas Business School  Tilburg, the Netherlands
 September 7  Innovation Productivity  Institute for Innovation & Innovation Productivity  Nice, France
 April 27  User Behavior in a Portal Environment  TopForce  London, United Kingdom
 February 22  Information Usage Behavior  Rotterdam School of Management  Rotterdam, the Netherlands

 February 15

  Find, use, and share information  Microsoft  Amsterdam, the Netherlands

Speaking Engagements in 2006
 Date  Event  Organization  Venue
 November 24  Information Usage Behavior  Rotterdam School of Management  Rotterdam, the Netherlands

 June 11-13

   Acceptance and Use of IT  GITMA  Orlando, Florida, United States

Speaking Engagements in 2005
 Date  Event  Organization  Venue

 November 23

   Enterprise Portals  Heliview  Zeist, the Netherlands

 October 19

   Enterprise Portals and e-HRM  Mediaplaza  Utrecht, the Netherlands

 April 25

   e-Business and Business Marketing  Eindhoven University of Technology  Eindhoven, the Netherlands
 April 5   Information Overload  Gemeente Rotterdam  Rotterdam, the Netherlands
 April 4   Roundtable Knowledge Worker Productivity  Oracle  Amersfoort, the Netherlands

Speaking Engagements in 2004
 Date  Event  Organization  Venue
 October - 
 December		  MBA course Executives and Information  Rotterdam School of Management  Rotterdam, the Netherlands
 October 8  Case Internet Portal  Tias Business School MBA  Tilburg, the Netherlands
 September 23  Information and Enterprise Portals  Tias Business School Executive MBA  Paris, France

 March 22

  Knowledge Management and Portals   Vlerick Leuven Gent Management School  Gent, Belgium

 January 21

  e-Business and Business Marketing  Tias Business School  Eindhoven, the Netherlands

Speaking Engagements in 2003
 Date  Event  Organization  Venue

 September 27

  Senior Executives and IT Acceptance   Universiteit Antwerpen  Knokke, Belgium

 September 11

  Information and Enterprise Portals  Tias Business School Executive MBA  Paris, France
 April 15  Portals as the successor of Intranet  Overheid Digitaal  Den Haag, the Netherlands

 March 28

  Enterprise Portals and EDP-Auditors  Erasmus University  Rotterdam, the Netherlands

 March 20

  e-HRM  Universiteit Antwerpen  Antwerp, Belgium

Speaking Engagements in 2002
 Date  Event  Organization  Venue

 December 14

  Enterprise Content Management  Universiteit Antwerpen  Antwerp, Belgium

 November 27

  Professionalisering van INTRANET  Focus  Amsterdam, the Netherlands

 November 21

  Enterprise Portals  Universiteit Antwerpen  Antwerp, Belgium

 November 5

  De impact van de IK-cultuur op
 informatisering		  SAP  Den Bosch, the Netherlands

 June 12/13

  B2E Employee Communication
 Strategies		  Marcus Evans  Copenhagen, Denmark
 April 9  Content Management  Butler Group  Amsterdam, the Netherlands
 March 21  B2E, Reorganiseren of e-organiseren  Giarte / Mediaplaza  Utrecht,  the Netherlands