David Wertheimer is a digital strategist and accomplished business builder. He is Chief Strategy Officer of Proof Integrated Communications, a full-service integrated marketing, communications and advertising agency within WPP Group, and Managing Director at parent company Burson-Marsteller. David is spearheading Proof's corporate strategy, business development and account management while helping guide its creative, technical and digital output.

David was previously founding CEO of Canopy, a startup ecommerce agency owned by Alexander Interactive, where he led the company from inception to its position as a successful and sought-after boutique. David was appointed to lead Canopy after building the strategic discipline at Ai. As director of strategy, he guided the successful launch, repositioning, and user experience of some of the industry's most influential websites.

Prior to Ai, David ran ecommerce and Internet marketing for Clarins USA, tripling online revenue while launching its ecommerce site. He also ran his own consulting company, User Savvy, and held design and management roles at The Economist, Billboard, Adweek and the Hollywood Reporter.

David is an internationally recognized public speaker and author on online strategy and user experience. His Ideapad, launched in 1998, is one of the world's oldest continually publishing blogs.

David has an MBA from the New York University Stern School of Business and a bachelor's degree from Franklin & Marshall College. He lives in New York with his wife, award-winning advertising executive Amy Wertheimer, and their sons Nathan and Eli.