???????????? ?????,??????,?????? ??????? ??? ???? ?????.???????????? ???????? ?? ?????? ?????????? ?? ??? ??????????? ??? ???????????????? ?? ??? ?????????? ????? ?? ??????????:Utilized by Fb to provide a series of advertisement products for instance actual time bidding from 3rd party advertisers.(? ?????????? ????? ?????????? ?? ??????? ??????? ??