I am a student at the University of Arizona and I am currently working on a project with a company called Earth Knowledge. We are currently evaluating their process of geotagging environmental articles, categorizing them, and posting them to their website.
It depends on the system architecture of the website. When you generate the web pages on the server then you will parse the GeoRSS on the server and generate the pages with the information. Otherwise if you have more an ajax site then you will implement it on the client side.