In 2000, the American Legacy Foundation (Legacy) launched truth^sm, a national, multi-medium tobacco control social marketing campaign targeting youth age 12–17. This paper provides a brief description of one aspect of that campaign, the truth^sm tour, and compares and contrasts the truth^sm tour with commercial field marketing approaches used by the tobacco industry. The methods used for the tour's process evaluation are also described, and two important lessons learned about using field marketing techniques and using youth to implement field marketing techniques in social marketing campaigns are discussed. Social marketing campaigns that target youth may want to launch field marketing activities. The truth^sm tour experience can inform the development of those efforts.