RSS (Really Simple Syndication) is an XML-based format for sharing and distributing Web content, such as news headlines. Using an RSS reader, you can view data feeds from various news sources, including headlines, summaries, and links to full stories.
RSS/News Aggregators (also called Readers) will download and display RSS feeds for you. A number of free and commercial News Aggregators are available for download. Many aggregators are separate, "stand-alone" programs; other services, such as My Yahoo! or Google, will let you add RSS feeds to a personalized Web page.