??????: ??????? ?????????? ???????? ??????? ???? ??? ?????? (??? ??? ????) ??????????, ????? ?????? (???????????? ??????) ?? ??????? ??????????, ??????, ??????? ?? ????? ?? ???????? ??? ?????? ??? ?????? ??? ??????? ????? ?? ??? ??????????? ??? ?? ???????? ? ??? ????????? ???.Web promoter rating (NPS): A measurement of buyer loyalty, which allows y