<prompt> tafadhali geuza maudhui haya ya swahili kwenda kwa kiingereza.baadhi ya programu za kawaida za vidakuzi huchagua utangazaji kulingana na ni nini muhimu kwa mtumiaji, ili kuboresha kuripoti utendaji wa kampeni na kuzuia kuonyesha matangazo ambayo mtumiaji tayari ameona.  <response>: the cookies are used to select ads based on the content that is relevant for a user, to improve performance reports of a campaign and to avoid displaying ads that have already been shown to the user. 