Jon Tennant has published "What Are the Barriers to Post-Publication Peer Review?" in the LSE Impact Blog.
Here's an excerpt:
Post-publication peer review emerged in response to increased calls for continuous moderation of the published research literature, consistent questioning of the functionality of the traditional peer review model, and a recognition that scientific discourse does not stop at the point of publication. However, uptake remains low overall. Jon Tennant sets out what the barriers to more widespread adoption of post-publication peer review have been and proposes potential solutions for each.