The Quackwatch website is Barrett's main platform for describing and exposing what he and other contributors consider to be quackery and health fraud. The website was part of Quackwatch, Inc., a nonprofit corporation founded by Barrett that aims to "combat health-related frauds, myths, fads, fallacies, and misconduct." The non-profit was dissolved in 2008. Barrett's writing is supplemented with contributions from many scientific, technical, and lay volunteers and includes numerous references to published research articles. Barrett defines "quackery" as "anything involving overpromotion in the field of health," and reserves the word "fraud" "only for situations in which deliberate deception is involved."