“Leading nonprofit science publisher Annual Reviews has successfully converted the first fifteen journal volumes of the year to open access (OA) resulting in substantial increases in downloads of articles in the first month.
Through the innovative OA model called Subscribe to Open (S2O), developed by Annual Reviews, existing institutional customers continue to subscribe to the journals. With sufficient support, every new volume is immediately converted to OA under a Creative Commons license and is available for everyone to read and re-use. In addition, all articles from the previous nine volumes are also accessible to all. If support is insufficient, the paywall is retained….”