Factors Contributing to Facebook Audience OverlapSome audience overlap is inevitable. How to Access Facebook Audience Overlap InsightsFacebook provides an audience overlap analysis tool that makes it easy for marketers to detect whether issues are likely to arise. You can easily avoid overlap after creating a new ad campaign by checking the overlap with existing campaigns in the audience overlap tool. Best Practices for Efficient Facebook Ad TargetingNow that you know how to check for audience overlap on Facebook, use the best practices outlined below to reduce the likelihood that audience overlap ever becomes an issue. Take Control of Your Facebook Advertising SuccessKnowing how to see audience overlap for Facebook ads is just a small part of improving your overall Facebook advertising effort.