We encounter predatory journals every day in our email accounts friendly reminders to submit an article, desperate cries for help claiming that only your valued contribution is keeping this edition from being published or blatant request to submit NOW fill our accounts and get put to trash swiftly. While these usually badly formulated emails are easily recognized as phishing emails some predatory journals can deceive unexperienced or pressured scientist to cave in and send their work to one of these journals. This article is aimed at showing the evolution of predatory journals as well as point out subtler ways predatory journals try to lure authors in and how they can be spotted.