This edited collection offers thorough, multipronged approaches to understanding social media influencers. The perspectives in the 11 chapters range from science to faith and fitness to fashion across different international and ethical contexts. Editor Watkins presents a research-focused perspective more tailored to academic readers but still offers practical information in a number of fields. Books on social influence are abundant in the popular press, with many taking a more practical approach. Watkins’ compilation adds an important academic perspective to this vital new marketing sensation. Recommended. Advanced undergraduates through faculty and professionals.