User blog comment:Kirkburn/Technical Update: May 14, 2013/@comment-22460-20130515021914/@comment-452-20130515184903

Thanks.

Since the email states that it is supposed to be a follow-up for everyone who took the survey, we don't need confirmation from people who were invited to take the survey email, we only need confirmation from people were were not invited to take the survey (but received the follow-up email anyway).

I guess it would also be useful if anyone who took the survey but did not receive the follow-up would also say so.