Open Feedback Publishing System (OFPS) is now retired. Thank you to the authors and commenters who participated in the program.
OFPS was an O'Reilly experiment that demonstrated the benefits of bridging the gap between private manuscripts and public blogs. Readers gained access to in-progress O'Reilly manuscripts and were able to communicate suggestions with the authors, follow others' comments, and directly participate in the development of new books. Additionally, authors published their in-progress work whenever they thought it ready for public comment and were able to update the site with new versions as the content was improved.
Many of the book projects that were in OFPS have been migrated to Safari.