Social proof is a psychological phenomenon in which people tend to conform to the actions of those around them. It is the idea that when people are uncertain about something, they will look to the actions of others to guide their behaviour. Just like resource reviews, reactions are a form of social proof and increase the conversion of your product.
Buyers leaving a positive reaction on your resources sends a signal to other potential buyers that you have a high quality and highly regarded product. The reactions available are the same for both the resources marketplace and our forums: like, agree, winner, informative, useful, and creative