Social Pro Daily STUDY: Influencer Marketing Pays $6.50 for Every Dollar Spent That's good ROI. By Patrick Coffee March 26, 2015 Patrick Coffee @PatrickCoffee patrick.coffee@adweek.com Patrick Coffee is a senior editor for Adweek. Recommended articles {"channel":"elasticpress","title":"Recommended","post_types":["post","page"],"lineup_id":"54851","since_qty":30,"since_time":"d","until_qty":0,"until_time":"m","q":"","num_posts":0,"vertical":"performance-marketing"}