RSS is a method of distributing links to content in your web site that you'd like others to use. In other words, it's a mechanism to "syndicate" your content.

If you want to write a program that reads RSS feeds, so that you can publish headlines on your site, build your own portal or homegrown news aggregator, or whatever. What does an RSS feed look like? That depends on which version of RSS you're talking about.

You can create it mannualy or use, for example a php/asp script...

A RSS tutorial can be found here: http://www.w3schools.com/rss/rss_intro.asp

Another helpful link: http://searchenginewatch.com/sereport/article.php/2175271