Influencer marketing has had a significant impact on advertising, particularly in the realm of social media. By collaborating with influencers who have large and engaged followings, brands can reach new audiences and increase their exposure in a more authentic and relatable way. Influencers can also provide valuable feedback and insights on products and campaigns, which can help brands to refine their messaging and targeting. However, there are also concerns around transparency and authenticity in influencer marketing, as some influencers may not disclose sponsored content or may promote products that they do not actually use or believe in.