After reading up on the CommentAPI, if I were to write the RatingAPI, I’d pretty much plagiarize the CommentAPI but only make the following changes:
Remove the title and link elements (they are unnecessary).
Change the html discovery to:
Change the new comment element to a rating element:
\<wfw:endpoint>http://bitworking.org/news/ratings/52\</wfw:endpoint>\ \<wfw:min>1\</wfw:min>\ \<wfw:max>5\</wfw:max>\ \</wfw:rating>\
What do you think?