RSS (most commonly expanded as RDF Site Summary and Really Simple Syndication) is a family of web feed formats used to publish frequently updated works in a standardized format. It is based on XML, from which it inherited simplicity, extensibility and flexibility.
An RSS document includes full or summarized text, plus metadata such as publishing dates and authorship. Web feeds benefit publishers by letting them syndicate content automatically.

A standardized XML file format allows the information to be published once and viewed by many different programs. The user subscribes to a feed by entering into the reader the feed's URI or by clicking an RSS icon in a web browser that initiates the subscription process.
The RSS reader checks the user's subscribed feeds regularly for new work, downloads any updates that it finds, and provides a user interface to monitor and read the feeds.

De Agostini’s RSS is a service that enables users to constantly be updated on our latest news in real time.
Rss Review

There are various news aggregation solutions, depending on the computer, the system and, in some cases, the browser.
The following is a list of some you may find on the web:

Feedreader Windows
Straw Linux
Shrook Mac OS X