RSS feeds provide an easy way for users to keep up-to-date on the latest postings of a particular website. Using aggregator software (explained below) the user can subscribe to the "feeds" from any site providing them. When the site(s) is updated, the user receives the update as a new "headline" in their aggregator, which they can click on to access the updated information.
Technically speaking, RSS is a family of web feed formats, specified in XML and used for Web syndication. RSS is used by (among other things) news websites, weblogs and podcasting. The abbreviation is variously used to refer to the following standards:
An aggregator or news aggregator is a type of software that retrieves syndicated Web content that is supplied in the form of a web feed (RSS, Atom and other XML formats), and that are published by weblogs, podcasts, vlogs, and mainstream mass media websites. Often referred to as "news readers", aggregators are quickly becoming the preferred method for users to receive updates from their favorite sites. There are many free aggregators available as well as some commercial products with advanced features. The list below provides links to some of the more popular aggregators.
Online Aggregators:

