“They threaten research by failing to demarcate authentic science from methodologically unsound science…” (Beall 2017: 276).
“… researchers might establish their new research based on bogus and manipulated papers.” (Dadkhah, Lagzian, and Borchardt 2017, 181).
“… these publishers could disappear overnight and with it would go all the previously published research which could have been genuine.” (Natarajan and Nair 2016, 107).
“… attaining a publication in a predatory journal is not neutral on a CV or resume but an active demerit that harms the external reputations of all those involved.” (Clark and Thompson 2016, 1).
Articles accepted by predatory publishers are considered to be “previously published,” and as such, legitimate publishers may not be able to accept them for publication in one of their journals, assuming that the predatory publisher releases them for publication elsewhere (Dadkhah and Darbani 2016, 574).
“Predatory journals are generally ignored, causing any legitimate science within them to be lost.” (Dadkhah and Darbani 2016, 574).