RSS Feeds are a method of providing notifications and news. In the case of the HALO RSS Feed, notifications are created whenever a new or updated article appears on the HALO Front page, or whenever an event is to happen within the next 30 days, or when a flyer, final details or results are added to the event.
The advantage of using the HALO RSS Feed is that even if you don't look at the web site regularly, you will know when something new is available with a description of the change.
There are many ways of getting RSS Feeds though the most useful are ones that feed to a place you would normally look on a regular basis.
The URL for the HALO RSS feed is http://halo-orienteering.org.uk/rss/index.php