Lars Bjørnshauge's presentation to the National Scholarly Editor's Forum of South Africa, Cape Town, 30th July 2014. Questionable publishing practices are not a phenomenon limited to open access publishers. In this presentation, Lars explores the phenomenon of questionable publishing practices, sometimes referred to as predatory publishers. The slides explore some thoughts on guidelines for transparency and what DOAJ is doing in this area. It includes tips on how to spot a questionable publisher in 5 minutes!