I don't want to be Crazy Internet Conspiracy Guy here, but I note this is a somewhat carefully worded response. mkjones did not say "We don't store the individual answers anywhere", "your answers are not recorded" or anything similar. Nor did he/she say "the data is only stored in aggregate", but "we look at the results in aggregate", which is a rather significant difference.

However, there's every chance that's just a case of bad wording. So, mkjones - can you confirm that the option the user selects on the dialog box we're discussing here ("Is this your friend's real name?") is not stored, saved or recorded in any way that could subsequently be connected to that user's account?