Joomla 2.5 comes with a preinstalled module for RSS Feed (RSS stands for Really Simple Syndication - a web feed format for publishing frequent updates of site content such as news, blog posts, etc.). It is called Syndicate Feeds. It allows the RSS feed to be generated from the featured articles listed on the corresponding page where the module is displayed.
The module can be published and configured from the Joomla 2.5 admin area -> Extensions -> Module Manager -> Syndicate Feeds.
Edit the module, select its position, pick the pages on which it will be displayed, enter the text that will be visualized in the module's area and pick the feed format. Save the changes and open a page for which the module is activated. Click on the module text link to see and subscribe for the RSS feed.
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