RSS stands for Really Simple Syndication.

RSS was designed to show selected data. Without RSS, users will have to check your site daily to check for new updates. This may be too time-consuming for many users. With an RSS feed (RSS is often called a News Feed or RSS Feed) they can check your site faster using an RSS aggregator (a site or program that gathers and sorts out several RSS feeds).

RSS is a protocol, an application of XML that provides an open method of syndicating and aggregating Web content. Using RSS files, you can create a data feed that supplies headlines, links, and article summaries from your Web site. Users can have constantly updated content from web sites delivered to them via a news aggregator, a piece of software specifically tailored to receive these types of feeds.

The main benefits of creating an RSS feeds include;

• RSS is an excellent and cost-effective way of driving traffic to, and increasing brand awareness of, any website that publishes content (e.g news, jobs, events) regularly. Once a publisher produces an RSS file, they are enabling others to syndicate their headlines, without any further work on their part.
• RSS is the dominant format for distributing headline content on the Web.
• RSS allows easy sharing of data between sites. Webmasters can use an RSS file to easily incorporate third party content into their own site.
• Content from RSS feeds can be easily repurposed allowing, for example, cross searching of a number of different feeds at once.
• RSS content can be added to personal desktop news reading applications like Feedreader or AmphetaDesk.

Thank You.

Source:

http://www.w3schools.com/rss/rss_intro.asp

http://rssgov.com/rssworkshop.html

http://www.techxtra.ac.uk/rss_primer/