On January 8th a brief interview aired on NPR summarizing our findings
“We are sincerely grateful to scholars who give their time to peer-review articles submitted to MDPI journals. Rigorous peer-review is the corner-stone of high quality academic publishing.”— The MDPI editorial team.
MDPI is a open access publishing power house with 390 published journals which get listed by Web of Science and Scopus. The company is officially based in Switzerland with offices in Serbia and China. It used to be listed as a predatory journal, but was removed in 2015 on appeal.
I personally had my doubt about this outfit and want to recall an experience that seemed to solidify my concerns.