Cheng sends numerous letter to online and print media, some of which were published in the "Sydney Morning Herald" and other newspapers, and he posts regularly on many websites and forums, including the Sydney diocese's "Sydney Anglican"s website where several of his articles have also been published. He has also posted on the Ship of Fools website. His posts defended the actions of a church which was the subject of a defamation lawsuit, involving the sacking of a female lay worker. More recently, Cheng has been a guest opinion writer for Sydney's "Daily Telegraph" and "Sunday Telegraph" newspapers, writing opinion pieces on religious and ethical issues, including Lent, euthanasia, and racism, In late 2006 he was also enlisted by "Daily Telegraph" columnist Piers Akerman to be a guest writer for a Muslim-Christian debate run by the paper on multiculturalism; others participating included Lebanese Muslim representative Keysar Trad.