Margot Wehrmeijer has self-archived "Exposing the Predators: Methods to Stop Predatory Journals."
Here's an excerpt:
This thesis looks at three possible methods to stop predatory journals: black-and white-lists, open peer review systems and new metrics. Black- and white-lists have set up rules and regulations that credible publishers and journals should follow. Open peer review systems should make it harder for predatory publishers to make false claims about their peer review process. Metrics should measure more aspects of research impact and become less liable to gaming. The question is, which of these three methods is the best candidate to stop predatory journals.