This document discusses how to use social proof to get more people to buy from you. It explains that people tend to follow the behaviors and choices of others when making decisions. The document then provides 4 ways to leverage social proof in marketing: 1) Showing proof from other users like testimonials and reviews, 2) Highlighting your product's popularity through metrics like subscriber counts, 3) Enticing customer recommendations through rewards, and 4) Using expert endorsements from influencers. It also shares results from an A/B test showing ads with social proof generated lower costs per lead than ads without social proof.