The open access movement at a crossroad: Are the big publishers and academic social media taking over? - Björk - 2016 - Learned Publishing - Wiley Online Library

"Key points

Traditionally, open access (OA) has been growing via two routes: full OA journals (gold) and open self-archiving of manuscripts (green).

Gold OA is dominated by new OA publishers (charging APCs) and society/university journals that do not.

Major commercial and society publishers are increasingly moving into the APC-funded OA market.

The proliferation of big national or consortium-level e-licences bundling subscription and APCs for hybrid OA may lead to large-scale flipping of journals to OA.

Authors appear to be choosing social networks over repositories for ‘green’ OA sharing of articles."