Many sites wish to provide a list of latest article titles and excerpts (or full content) in a format that can be read by newsreaders such as Google’s online reader application. RSS feeds are the most common type seen currently on blogs and major news sites alike. RSS is simply aformat which is based on XML with a particular end – the distribution of readable news from a site – in mind. The beauty of RSS is that a user can visit an RSS feed address and view the articles/content/links but can also simply copy the link into a reader which will continue to obtain the data from the feed for later consumption without the user needing to revisit the site. The ability of aggregators, and other automated systems to read these feeds is really important from a marketing perspective as it will result in your content being syndicated (repeated, linked to etc) on other sites.