????????, ??? ????? ?????? ?? ????????? ??? ??? ??? ???, ????? ???????? ????? ?? ??? ?????????????? ?????????, ???????????????? ?? ?????? ?????? ????.Produce robots.txt file to authenticate and stop crawler from crawling anything at all other than your home web site.????????? ??? ?? ???????? ???????? ???? ????? ??? ??? ????? ???.???? ???????? ?? ??