An RSS feed is important for your site because you can allow your readers to subscribe to your content. In turn, they can share these feeds on social networks. The process continues your site can get exposure.
Some search engines also allow you to submit your RSS feed and they use it to index your site. I prefer to submit sitemaps instead of RSS feeds, myself.
RSS stands for Really Simple Syndication and that is used to publish frequently updated stuffs like blog entries, news headlines, audio and video in a standard manner.
It benefits publishers by letting them syndicate content automatically.
An RSS(Really Simple Syndication) is used to publish update news and RSS is a dialect of XML. All RSS files must conform to the XML 1.0 specification, as published on the World Wide Web Consortium (W3C) website.
the major benefit is that there are many RSS directories which will increase your link building, secondly it drives quality traffic when someone looks at your news but you must have a blog not a static website