Question: Advertisers using similar audiences lists don't need to exclude people from original remarketing lists. Why is this the case?
- Similar audiences don't have any association with remarketing lists.
- Similar audiences use existing remarketing lists to get as much reach as possible.
- similar audiences will automatically remarket to existing leads if it identifies potential value in them.
- Similar audiences lists automatically exclude people so that only new leads are reached.
Explanation
Similar audiences are built from a seed remarketing list to help advertisers reach new people who resemble the original list rather than the original list members themselves. Google describes this audience expansion as a way to find new customers from existing first-party audience sources. In current Google Ads terminology, the same principle appears in Lookalike segments, which automatically exclude users from the seed lists. Because the original list is not included in the expansion audience, no separate exclusion is needed. Google Help+1
Why the other options are incorrect
A) There is a direct association because the expansion audience is created from the original remarketing list. Google Help
B) The source list is used as a seed for expansion, but the targeting goal is new-customer reach rather than maximum reach that includes the original list. Google Help+1
C) This audience type is for finding similar new users, not for automatically remarketing to the existing leads in the source list. Google Help+1
Source for verification
https://support.google.com/google-ads/announcements/9048695
https://support.google.com/google-ads/answer/15110871
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