Reflection on the peer review process and its challenges

Please reflect on and share any experiences you may have of peer review. Are there any parts of the peer review process that surprise you? Does this process accord with your own experience as an author or reviewer, or editor? What do you think are the benefits and problems of the process as described? Can you add to the challenges mentioned above, and do you have any suggestions for change to the system.

Posting your reflection is a requirement for gaining a certificate.