[7] Some "predatory" open access publishers use the mega journal model.
[8] Mega journals shift the publishing industry's funding standard from the subscription-based model common to traditional closed access publications to article processing charges.
[9] Their business model may not motivate reviewers, who donate their time to "influence their field, gain exposure to the most current cutting edge research or list their service to a prestigious journal on their CVs.
"[10] Finally, they may no longer serve as "fora for the exchange ... among colleagues in a particular field or sub-field", as traditionally happened in scholarly journals.
[11] To counter that indiscrimination, PLOS ONE, the prototypical megajournal, has started to "package relevant articles into subject-specific collections.