I have been eagerly reading the informative discussions around the Nelson Memo and a recent thread about SciElo and open access in low and middle income countries. I am learning a lot.

I wanted to open up a discussion about overlay journals. They appear to be a promising alternative model for peer-reviewed open access publishing, but they have not taken off. Have you heard of overlay journals? What do you think of them? What is blocking them from widespread use? 

If you have not heard of them but are curious this interesting paper from Rousi and Laakso has a nice overview: https://doi.org/10.1177/09610006221125208

Thanks for your thoughts,

-Shamsi