RSS stands for Really Simple Syndication and are also known as feeds. You can subscribe to feeds to get notified of updates and new entries, all you need is a feed reader. The benefit is that you can keep track of many websites in one convenient place. You won't have to visit each website to check them. 

Most of the newer browser versions automatically show you if there is a website feed available by displaying an orange RSS icon at the top of the browser window. Clicking on the icon will usually display the feed and/or give you options to subscribe to it. Sometimes this only appears on a website's home/index page.

There is a comprehensive list of feed aggregators on Wikipedia. Google Reader is very popular, and the Feedly application and Chrome extension and mobile apps complement it very well.

On the portal you can subscribe to any of our individual topic feed selection or our single feed. On our forum there is a single feed or a feed for each board.