An article in PeerJ this week provides an overview and analysis of the currently available Mega Journals – including PLOS ONE, BMJ Open, PeerJ and others.

The article summarises the various characteristics associated with these journals, including their fees, acceptance rates, publishing speed and various secondary features – such as alternative impact metrics, easy reusability of figures and data, post-publication discussions and portable reviews from other journals

However, the authors of the article conclude that these mega journals may be reaching their limits to growth for various reasons, including (1) the availability of motivated unpaid peer reviewers, and (2) lack of branding/prestige for authors.