Make clear your audience - Know who your target market is and Create personas to pin down their soreness details. Don’t attempt to focus on Everybody!? ?????? ??? ??? ????? ?????????? ?? ?? ???????????????? ??? ??????, ???? ?? ?? ??????????? ??? ?? ???????, ????? – ?????? ????????? ??? ?????? ???.?? ??????????? ?????? ??? ??????? ???????? ?????