RSS is an XML file that stores data about pages (blog entries, news) indicating their titles, short descriptions, and publication dates. It's convenient to keep track of new posts on various websites without checking each website manually. To view RSS feeds, you need to use special applications—RSS readers. Such applications are available on all popular desktop and mobile platforms.
You may find this feature especially useful when it comes to content-driven projects, such as blogs. This way, the readers of your blog will be able to add it to their RSS feed and follow new entries with ease.
To enable the RSS feature for your website, go to the Site Settings → More, select the "Create an RSS-feed" checkbox, and republish all pages.