When you first log in to the Ad Review Center, you will see all the currently location-based ads that have been placed on your site. A few days later, you will be able to see the previously displayed location-based ads on your site. If you think a particular ad is irrelevant to your site users, you can prevent it from being displayed by blocking it in the Ad Review Center. However, we recommend that you carefully consider the impact of filtering ads on your revenue, because the blocked ads will not participate in the bidding process, and advertisers whose ads are blocked may no longer target your site in the future.