Really Simple Syndication or RDF Site Summary.
"RSS is a format for syndicating news and the content of news-like sites, including major news sites like Wired, news-oriented community sites like Slashdot, and personal weblogs." - Mark Pilgrim
See http://www.xml.com/pub/a/2002/12/18/dive-into-xml.html and http://en.wikipedia.org/wiki/Really_Simple_Syndication for more information.
Mozilla
[https://addons.mozilla.org/extensions/showlist.php?application=firefox&numpg=10&category=News%20Reading You can use Firefox extensions to read RSS and Atom news].
Liferea
["Liferea"] is the Linux feed reader. You can install it typing:
apt-get update apt-get install liferea
And run it typing:
/usr/bin/liferea
in a ["terminal"] or choosing it from Menu->Internet
http://liferea.sourceforge.net : official website.
Akregator
["Akregator"] is the KDE RSS Feed Reader. You can install it typing:
apt-get update apt-get install akregator
And run it typing:
/usr/bin/akregator
in a ["terminal"] or choosing it from Menu->Internet
http://akregator.sourceforge.net : official website.