Open access publishing has led to the emergence of a new type of journal, the so-called megajournal. Exemplified by PLOS ONE, the megajournal is characterised by three features: full open access with a relatively low publication charge; rapid “non-selective” peer review based on “soundness not significance” (i.e. selecting papers on the basis that science is soundly conducted rather than more subjective criteria of impact, significance or relevance to a particularly community); and a very broad subject scope. The number of megajournals continues to grow: Table 10 lists about fifty examples (page 99).