There appears to be a black market for MDPI vouchers
There appears to be a market for MDPI vouchers. You provide any vouchers you have and “they” give you an authorship.
Integrity
Retraction Watch Mass Resignations List
Retraction Watch has just started monitoring the mass resignation of editors from journals.
Selling of authorships: Elsevier please investigate
We respectfully ask Elsevier to investigate two papers that appear to have been published after authors have paid to be an author.
Our anonymity and a change in direction
We outline a new direction for this web site (and our Twitter feed). We will still focus on predatory publishing but will also have a much wider coverage.