Home - Sponsored ads Certification - True or false? If an advertiser’s goal is sales efficiency, they should decrease bids on keywords with high ACOS. True or false? If an advertiser’s goal is sales efficiency, they should decrease bids on keywords with high ACOS. 2shares Facebook Twitter Pinterest LinkedIn Skype Facebook MessengerQuestion: True or false? If an advertiser’s goal is sales efficiency, they should decrease bids on keywords with high ACOS. True False The right answer was: True