[I am using the term “megajournal” here to mean “journal that practices PLOS ONE -style peer-review for correctness only, ignoring guesses at possible impact”. It’s not a great term for this class of journals, but it seems to be becoming established as the default.] Bo-Christer Björk​’s (2015) new paper in PeerJ asks the question “Have the “mega-journals” reached the limits to growth?”, and suggests that the answer may be yes.