Smith began his career in Holocaust denial with the Institute for Historical Review, writing and editing its newsletter. He co-founded the Committee for Open Debate on the Holocaust (CODOH) with Mark Weber. The pages of Smith's monthly newsletter, Smith's Report, have become a forum for Holocaust deniers. Smith publishes articles written by and concerning an international coterie of well-known revisionists like David Irving (UK), Arthur Butz (USA), and Robert Faurisson (France) as well as obscure Holocaust denier bloggers, whose comments are sometimes published anonymously. Additionally, Smith has been helped with his publications by Germar Rudolf (Germany), Richard Widmann (USA), and Paul Grubach (USA), among others.