The so-called TikTok-ification of social media, in which the platform’s short-form, viral, and algorithm-driven content, has fueled the exponential growth of the influencer marketplace and creator economy. As it swells, marketers are tasked with allocating ad dollars to maximize return on investment. As it stands, smaller, more niche creators are delivering the best bang for buck, according to five influencer marketing execs Digiday spoke to for this story.