The metrics that brands use to measure the success of an influencer-marketing campaign are changing, as 'likes' and 'followers' fall out of favor

· Given the influencer-marketing industry's concern about fake followers and Instagram's move to hide likes, some brands are looking at new metrics to measure the success of campaigns in 2020.
· Some brands are tracking what followers are saying in the comments (such as how often the brand or product is mentioned) or asking...