The rumor is that they only send out this survey to those they know–or at least suspect–will answer it in exactly the way that they want it answered. I think it is fair to let as many people know about the survey so that their “results” will reflect as many viewpoints as possible. Please follow the link below and answer your conscience. A warning however, they will require an email address and confirmation of that email address, so you might not want to use your primary email in case your answer lands you on a spam list.
[Update: It seems that this survey has been pulled of their site. I wonder why?]