List as of 1 May 2006
Printed list of participants is now closed
| Company Name | Country |
| ABACO | Brazil |
| Alimentos Polar Comercial | Venezuela |
| BrandSmart | South Africa |
| ChannelM2 | USA |
| Chevron International | Singapore |
| Discovery and Action Consulting | China PR of |
| EACMI | France |
| Florida International University | USA |
| Ibope Media | Brazil |
| Improdir Latin America & US Hispanic | USA |
| Independent Consultant | UAE |
| Integration | Cyprus |
| Ipsos Bimsa | Mexico |
| Islamic Bank of Britain | UK |
| JWT | Argentina |
| Kimberly-Clark | USA |
| KMR | UK |
| Market Analysis Brasil | Brazil |
| Market Decisions | South Africa |
| McCann-Erickson | UK |
| NODO | Mexico |
| OMD | UK |
| Parametría | Mexico |
| Research International | UK |
| Sony Ericsson | Sweden |
| Sopi Communication | France |
| Synovate | UK |
| Synovate | USA |
| Synovate Censydiam Institute | Belgium |
| Televisa Corporacion | Mexico |
| The ideas research group | Canada |
| TIME & FORTUNE | UK |
| The mission House | Belgium |
| UBS | USA |
| Warsaw University | Poland |
| Western Union | USA |
| W.G. Smith & Associates | USA |