What is RSS?
RSS is an XML-based (eXtensible Markup Language) format for content distribution that includes headlines, summaries and links.
What is an RSS Reader?
Also known as an RSS aggregator or News Reader, this is software which enables you to get the latest information, in RSS format, delivered straight to your desktop. There are a wide range of RSS Readers available for all platforms and operating systems. Below is a list of some popular RSS readers.
Google Reader (http://www.google.com/reader/view/#directory-welcome-2-page)
To read a topic, you'll need to copy the URL into your RSS reader. Once you have it in your reader, you can subscribe and get updates when this topic updates