Really Simple Syndication (RSS) is an (Extensible Markup Language) XML-based format for distributing and aggregating web content (such as news headlines). Using RSS, web content providers can easily create and disseminate news headlines and URLs.
A typical applications for RSS feeds is using a program known as a news aggregator (also called news reader) to collect, update, and display RSS feeds on another webpage. You simply plug in the addresses of the RSS files you want, such as the ones listed above. By using RSS feeds, website owners can keep content current.
RSS feeds are distributed in XML and are usually identified by the following icon: