rev attributeThe idea of the rev attribute (no, I didn’t mean rel) is that rel stands for “relationship” (or similar) and rev stands for “reversed relationship.” So if you have page A and page B. And A is the page of author from page B than page B could have a link with rel set to author and rev set to made. Page A could have a link with rel set to made and rev set to author. I guess there are some edge cases where that is useful. If anyone, fantasai probably knows them.
All based on a discussion at reboot8 after this rant from a “crazy Irish guy” (he’s actually nice): In Praise of the Hyperlink. Posting this from a paid cph network at the Copenhagen airport.