另外Hindawi 和 MDPI 的比较似乎是JB的软肋，一被人问起这个问题就暴跳如雷：

ash kanash says:    
February 22, 2014 at 2:47 PM    

Jeff, what are the differences between Hindawi and MDPI that prompted you to remove the former and add the latter to the list?

Jeffrey Beall says:    
February 22, 2014 at 3:21 PM    

Cool, a trick question from Inspector Clouseau! What is your real name? Why are you afraid to reveal it? How many papers have you published in Shukun Lin’s website? Zero? Excellent — that’s exactly what I recommend.