RSS (also known as Rich Site Summary) uses a family of standard web feed formats to publish frequently updated information rapidly. Usually, an RSS document (also known as a "feed", "web feed", or "channel") includes of a full or summarized text, and metadata, like publishing date and author's name.
How to implement RSS on my wiki
You can implement RSS in many ways on your wiki. All you must do is locate the RSS file from the source of the site and add the tags
What it should look like
Example (from w:c:redwall's recent changes):
This feature is listed on Special:Version as Wikia RSS feed in the Parser hooks section together with
<rss> in the Parser extension tags section. See also mw:Extension:RSS and the shared Help:RSS2Wiki page.