This document provides an overview of building credibility online through social proof. It discusses how putting the right "suit" on a website through recommendations, testimonials, media coverage and social media profiles can significantly increase trust and revenue. Specific tactics recommended include having endorsements, testimonials and media mentions to establish expertise. It also notes that perceived credibility is more important than actual credibility online, and that social proof in the form of evidence of other customers is a key factor visitors consider before becoming a website's first customer.