ROR (Resources of a Resource), a fast growing independent XML format for describing any object of your content in a standard manner, so any search engine can be able to better understand that content.
ROR was a good idea and could have become a standard for sites maps (Yahoo and some other search engines were and might still be supporting ROR sitemaps), unfortunately Google choose another path with XML sitemaps
No, there is no point in using a ror format. It was a good idea at the time it emrged but it got dumped along the way so no one is actually using those anymore - there is no benefit - actually you can even get into issues with crawling using those.
ROR is a rapidly growing XML format for describing any object on a website (sitemaps, products, services, menus, images, reviews, contact info, business info, etc), so any search engines can better understand its content. there is no benefit