A ‘dark post’ on Facebook refers to a type of targeted advertisement that is not visible on a brand’s timeline or newsfeed, but is instead shown to a specific audience based on their demographics, interests, and behaviors. These posts are created and managed through Facebook’s Ads Manager, allowing businesses to reach a highly targeted audience without cluttering their page with irrelevant content. This type of post is often used for A/B testing, promoting exclusive offers, or tailoring content to specific segments of a brand’s audience. While they may not be visible to the general public, dark posts can be a powerful tool for businesses looking to increase their reach and engagement on Facebook.