The RSS Newsfeed portlet provides an RSS mechanism for subscribing to and publishing information from an RSS feed.
The RSS Newsfeed portlet uses the Resource Description Framework (RDF). An RDF includes the authors of the resource, the date of creation or update, and the organization of the pages on a site (the site map). It also contains information that describes content in terms of audience or content rating, keywords for search engine data collection, subject categories, and so on.
Using RDF data, many Web content providers create RDF Site Summary (RSS) files about their Web content and provide this data as an RSS feed. The portlet provides an RSS mechanism for subscribing to and publishing information from RSS feeds. You can configure the portlet to display content from multiple RSS feeds. The portlet displays the topic and items from each defined RSS feed onto a single display. The portlet can also be configured to allow users to select their own RSS feeds.
The portlet supports RSS versions 0.91, 1.0, and 2.0 extensions.