Send your questions, comments, and suggestions to The Panelist Support Helpdesk at chenderson@surveys.com in the US and Pam Hughes at pamhughes@surveys.com in the UK.

By UK Postal Mail:
GfK c/o Panels
Ludgate House
245 Blackfriars Road
London SE1 9UL

By US Postal Mail:
GfK c/o Panels
1060 State Road
Princeton, NJ 08542