If you devote yourself to the same topic or niche when publishing content people will tend to associate your name and/or business with the topic you are writing about. This continual 'reinforcement' will in turn make you more or less synonymous with the subject matter. Over time this will tend to brand you and/or your business with the subject matter contained in the content you are circulating. All this will be based upon the consistency and longevity of your content marketing campaign.