Utilized by Fb to deliver a number of ad goods for example real time bidding from 3rd party advertisers.?????????? ??? ???????? ????? ??? ??????? ???? ??? ?????????? ??? ????????? ??? ??????? ???????? ??? ???? ??? ?? ????????? ????? ??? ???????? ?? ??? ?????????? ?? ????????? ?? ???????? ??? ?????????? ???????? ???? ??????? ???!???????????? ???????