Net Promoter Score System written by Saurabh Majumdar July 21, 2017 All Tellofy Surveys have the net promoter score questions built in and allow consumers to give valuable feedback. Net Promoter Score System was last modified: August 13th, 2017 by Saurabh Majumdar 0 comment 0 Facebook Twitter Google + Pinterest Saurabh Majumdar