OK, so the idea is definitely interesting. RSS and Ajax – a match made in heaven? That, really depends on its usage.

Ajax (Asynchronous JavaScript And XML) and RSS (Really Simple Syndication) are two technologies that have taken the Web by storm. Most commonly, RSS is used to provide news to either people or other organizations. This is done by serving an “RSS feed” from a website. An RSS feed is simply a link to an XML file that is structured in a certain way. The RSS specification tells us the expected structure of the XML file. For example, the title, author, and description tags are required, and so all RSS XML files will have at least these three tags.
The RSS specification that we will be using is 2.0, which is both the newest and most widely used of the three specifications (0.98, 1.0, and 2.0). Fortunately, RSS 2.0 is far less complex than RSS 1.0, so you can quickly familiarize yourself with RSS 2.0 here: blogs.law.harvard.edu/tech/rss…. Source: XML.com